US4450407A
Expired / Lapsed
US
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Magnetic resonance cell and method for its fabrication
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1981-10-02
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Granted: 1984-05-22
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Expires: 2001-10-02
Abstract
Abstract There is disclosed a magnetic alignment device and method for its fabrication in which the aligned magnetic moments of a gas enclosed within a container have an increased relaxation time, hence an increase signal to noise output. One embodiment is a nuclear magnetic resonance gyroscope including a container for gas having a layer of rubidium hydride on its inner surface. Enclosed within the container is rubidium vapor and xenon-131 gas. The layer of rubidium hydride is manufactured by reacting hydrogen gas and rubidium at a temperature between approximately 70° and about 250° C. In one specific method, a layer of rubidium hydride is formed by heating rubidium and hydrogen gas at about 85° for about 7 days.
Inventors
- 👤 Tae M. Kwon
- 👤 William P. Debley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:47
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/58; G01C19/60; G01C19/62; G01N; G01N24/00; G01N24/006; G04; G04F; G04F5/00; G04F5/14
Claims Analysis
Total Claims: 108
Claim 1
Independent Claim
70 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 2
Dependent Claim
70 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 3
Dependent Claim
87 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of lithium, cesium, potassium, sodium and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 4
Dependent Claim
87 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of lithium, cesium, potassium, sodium and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 5
Dependent Claim
85 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of cesium, sodium and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-141 and krypton-83.
Claim 6
Dependent Claim
85 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of cesium, sodium and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-141 and krypton-83.
Claim 7
Dependent Claim
68 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 8
Dependent Claim
68 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 9
Dependent Claim
84 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time of aligned magnetic moments of a nuclear quadrupole moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 10
Dependent Claim
84 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time of aligned magnetic moments of a nuclear quadrupole moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with an alkali metal hydride where the alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 11
Dependent Claim
54 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with rubidium hydride; and (b) introducing into said container Xenon-131 gas.
Claim 12
Dependent Claim
54 words
A process for treating the inner surface of a magnetic moment gas container to increase the relaxation time of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said magnetic moment gas container with rubidium hydride; and (b) introducing into said container Xenon-131 gas.
Claim 13
Dependent Claim
96 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a magnetic moment gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 14
Dependent Claim
96 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a magnetic moment gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 15
Independent Claim
99 words
A method of manufacturing alkali metal hydride comprising: (a) reacting, in a closed container, hydrogen with an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium, said alkali metal being in excess of stoichiometric, at a temperature sufficiently high to form the corresponding metal hydride on the inner walls of said container, and sufficiently low so as to maintain 9 within said container the presence of an unreacted portion 10 of said alkali metal; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 16
Independent Claim
99 words
A method of manufacturing alkali metal hydride comprising: (a) reacting, in a closed container, hydrogen with an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium, said alkali metal being in excess of stoichiometric, at a temperature sufficiently high to form the corresponding metal hydride on the inner walls of said container, and sufficiently low so as to maintain 9 within said container the presence of an unreacted portion 10 of said alkali metal; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 17
Dependent Claim
20 words
The method of claim 8 wherein the temperature is from about 70 degrees C. and to about 250 degrees C.
Claim 18
Dependent Claim
29 words
The method of claim 8 wherein the temperature is maintained within the range from about 70 degrees C. to 90 degrees C. for about four to about fourteen days.
Claim 19
Independent Claim
28 words
The method of either of claims 8 through 10 wherein said container is of a material selected from the group consisting of glass, quartz, fused silica, and sapphire.
Claim 20
Dependent Claim
19 words
The method of claim 8 wherein the temperature is maintained until said walls of said container appear milky white.
Claim 21
Independent Claim
94 words
A method for treating a container for gas comprising: (a) evacuating said container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined amount of rubidium; (d) introducing into said container a predetermined amount of xenon-131; and (e) heating said container in the presence of said hydrogen and xenon gases and said rubidium to a temperature between about 70 degrees C. and less than about 400 degrees C. for a time sufficient to deposit a film of rubidium hydride on the inner walls of said container.
Claim 22
Independent Claim
94 words
A method for treating a container for gas comprising: (a) evacuating said container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined amount of rubidium; (d) introducing into said container a predetermined amount of xenon-131; and (e) heating said container in the presence of said hydrogen and xenon gases and said rubidium to a temperature between about 70 degrees C. and less than about 400 degrees C. for a time sufficient to deposit a film of rubidium hydride on the inner walls of said container.
Claim 23
Dependent Claim
22 words
The method of claim 13 further comprising sealing the container after completing steps (a) through (d) and prior to beginning step (e).
Claim 24
Dependent Claim
17 words
The method of claim 13 wherein said temperature is about 70 degrees C. to 90 degrees C.
Claim 25
Dependent Claim
16 words
The method of claim 15 wherein said temperature is maintained from about five to nine days.
Claim 26
Dependent Claim
17 words
The method of claim 16 wherein said temperature is maintained at about 85° for about 7 days.
Claim 27
Dependent Claim
44 words
The method of claim 13 wherein said predetermined quantity of said hydrogen gas is a partial pressure from about three to ten Torr at conditions of standard temperature and pressure and the volume of said container is from about one half to three milliliters.
Claim 28
Dependent Claim
23 words
The method of claim 13 wherein said predetermined quantity of said alkali metal is at least stoichiometric with respect to said hydrogen gas.
Claim 29
Dependent Claim
37 words
A cell for use in a magnetic alignment device comprising: (a) a glass container for gas; (b) a layer of rubidium hydride deposited on the inner walls of said container; and (c) rubidium vapor in said container.
Claim 30
Dependent Claim
37 words
A cell for use in a magnetic alignment device comprising: (a) a glass container for gas; (b) a layer of rubidium hydride deposited on the inner walls of said container; and (c) rubidium vapor in said container.
Claim 31
Dependent Claim
41 words
A cell for use in a magnetic alignment device comprising: (a) a glass container for gas; (b) a layer of rubidium hydride on the inner walls of said container; (c) rubidium vapor in said container; (d) xenon-131 gas in said container.
Claim 32
Dependent Claim
41 words
A cell for use in a magnetic alignment device comprising: (a) a glass container for gas; (b) a layer of rubidium hydride on the inner walls of said container; (c) rubidium vapor in said container; (d) xenon-131 gas in said container.
Claim 33
Dependent Claim
197 words
A nuclear magnetic resonance detection device comprising: (a) a container for gas; (b) at least one optically pumpable substance, selected from the group consisting of cesium, potassium, sodium, and rubidium, said pumpable substance being contained in said cell; (c) at least one nuclear moment gas selected from the group comprising xenon-131 and krypton-83 also contained within said cell, the nuclear magnetic moments of each of said at least one nuclear moment gases being capable of being at least partially aligned; (d) means for applying a steady magnetic field to said cell; (e) first means for illuminating said cell with pumping light capable of partially aligning the magnetic moments of said optically pumpable substance in one direction; (f) means for precessing said nuclear magnetic moments of said at least one nuclear moment gas about the direction of the steady magnetic field at the respective Larmor precession frequencies of said at least one nuclear moment gas; (g) means for applying an AC carrier magnetic field to said cell; and (h) a layer of alkali metal hydride deposited on the inner wall of said container, said alkali metal being selected from the group consisting of cesium, potassium, sodium, and rubidium.
Claim 34
Dependent Claim
197 words
A nuclear magnetic resonance detection device comprising: (a) a container for gas; (b) at least one optically pumpable substance, selected from the group consisting of cesium, potassium, sodium, and rubidium, said pumpable substance being contained in said cell; (c) at least one nuclear moment gas selected from the group comprising xenon-131 and krypton-83 also contained within said cell, the nuclear magnetic moments of each of said at least one nuclear moment gases being capable of being at least partially aligned; (d) means for applying a steady magnetic field to said cell; (e) first means for illuminating said cell with pumping light capable of partially aligning the magnetic moments of said optically pumpable substance in one direction; (f) means for precessing said nuclear magnetic moments of said at least one nuclear moment gas about the direction of the steady magnetic field at the respective Larmor precession frequencies of said at least one nuclear moment gas; (g) means for applying an AC carrier magnetic field to said cell; and (h) a layer of alkali metal hydride deposited on the inner wall of said container, said alkali metal being selected from the group consisting of cesium, potassium, sodium, and rubidium.
Claim 35
Dependent Claim
13 words
The device of claim 22 wherein said alkali metal hydride is rubidium hydride.
Claim 36
Dependent Claim
16 words
The device of claim 23 in which said at least one nuclear moment gas is xenon-131.
Claim 37
Independent Claim
20 words
The device of claims 22, 23, or 24 in which said at least one optically pumpable substance is rubidium vapor.
Claim 38
Independent Claim
14 words
The device of claims 22, 23, or 24 in which said container is glass.
Claim 39
Dependent Claim
11 words
The device of claim 25 in which said container is glass.
Claim 40
Dependent Claim
70 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, xenon-129, neon-21, krypton-85, mercury-201, cesium, sodium, and rubidium.
Claim 41
Dependent Claim
70 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, xenon-129, neon-21, krypton-85, mercury-201, cesium, sodium, and rubidium.
Claim 42
Dependent Claim
101 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, xenon-129, neon-21, krypton-83, krypton-85, mercury-201, cesium, sodium, and rubidium.
Claim 43
Dependent Claim
101 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, xenon-129, neon-21, krypton-83, krypton-85, mercury-201, cesium, sodium, and rubidium.
Claim 44
Dependent Claim
68 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, rubidium, cesium, potassium and sodium.
Claim 45
Dependent Claim
68 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, rubidium, cesium, potassium and sodium.
Claim 46
Dependent Claim
98 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, rubidium, cesium, potassium and sodium.
Claim 47
Dependent Claim
98 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, rubidium, cesium, potassium and sodium.
Claim 48
Dependent Claim
67 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, and mercury-201.
Claim 49
Dependent Claim
67 words
A process for treating the inner surface of a container for gas to increase the relaxation time constant of aligned magnetic moments of at least one magnetic moment gas contained within, comprising: (a) coating said inner surface of said container with rubidium hydride; and (b) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, and mercury-201.
Claim 50
Dependent Claim
97 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, and mercury-201.
Claim 51
Dependent Claim
97 words
A process for increasing the relaxation time of aligned magnetic moments of at least one magnetic moment gas comprising: (a) providing a gas container made from a material selected from the group consisting of glass, fused silica, quartz and sapphire; (b) reacting hydrogen gas with an alkali metal selected from the group comprising cesium, potassium, rubidium and sodium to deposit a layer of alkali metal hydride on the inner surface of said container; and (c) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, and mercury-201.
Claim 52
Independent Claim
124 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of krypton-83, krypton-85, xenon-131, xenon-129, neon-21, mercury-201, cesium, potassium, sodium and rubidium.
Claim 53
Independent Claim
124 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of krypton-83, krypton-85, xenon-131, xenon-129, neon-21, mercury-201, cesium, potassium, sodium and rubidium.
Claim 54
Independent Claim
121 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of krypton-85, xenon-131, krypton-83, cesium, potassium, sodium and rubidium.
Claim 55
Independent Claim
121 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of krypton-85, xenon-131, krypton-83, cesium, potassium, sodium and rubidium.
Claim 56
Independent Claim
103 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container mercury-201 gas.
Claim 57
Independent Claim
103 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container mercury-201 gas.
Claim 58
Independent Claim
116 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 59
Independent Claim
116 words
A method for manufacturing a cell for use in magnetic alignment devices comprising: (a) evacuating a container; (b) introducing into said container a predetermined quantity of hydrogen gas; (c) introducing into said container a predetermined quantity of an alkali metal selected from the group consisting of cesium, potassium, sodium, and rubidium; (d) heating said container in the presence of said hydrogen gas and said alkali metal to a temperature between about 70 degrees C. and about 250 degrees C. for a time sufficient to form alkali metal hydride on the inner walls of said container; and (e) introducing into said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 60
Dependent Claim
60 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 61
Dependent Claim
60 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 62
Dependent Claim
78 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 63
Dependent Claim
78 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 64
Dependent Claim
77 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 65
Dependent Claim
77 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 66
Dependent Claim
59 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 67
Dependent Claim
59 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group comprising xenon-131, neon-21, xenon-129, krypton-83, mercury-199, mercury-201, cesium, potassium, sodium and rubidium.
Claim 68
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 69
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 70
Dependent Claim
75 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 71
Dependent Claim
75 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 72
Dependent Claim
74 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 73
Dependent Claim
74 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 74
Dependent Claim
56 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 75
Dependent Claim
56 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one gas having a magnetic moment selected from the group consisting of xenon-131, krypton-83, mercury-201, cesium, sodium and rubidium.
Claim 76
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 77
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 78
Dependent Claim
75 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 79
Dependent Claim
75 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 80
Dependent Claim
74 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 81
Dependent Claim
74 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 82
Dependent Claim
56 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 83
Dependent Claim
56 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, neon-21, cesium, potassium, sodium and rubidium.
Claim 84
Dependent Claim
53 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 85
Dependent Claim
53 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 86
Dependent Claim
71 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 87
Dependent Claim
71 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 88
Dependent Claim
70 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 89
Dependent Claim
70 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 90
Dependent Claim
52 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 91
Dependent Claim
52 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131, krypton-83, krypton-85, and mercury-201.
Claim 92
Dependent Claim
51 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 93
Dependent Claim
51 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 94
Dependent Claim
69 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 95
Dependent Claim
69 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 96
Dependent Claim
68 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 97
Dependent Claim
68 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 98
Dependent Claim
50 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 99
Dependent Claim
50 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least one magnetic moment gas selected from the group consisting of xenon-131 and krypton-83.
Claim 100
Dependent Claim
40 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least xenon-131 gas.
Claim 101
Dependent Claim
40 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of said container; and (c) within said container at least xenon-131 gas.
Claim 102
Dependent Claim
58 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least xenon-131 gas.
Claim 103
Dependent Claim
58 words
A cell for use in magnetic alignment devices comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, lithium, and potassium, sodium and rubidium; and (c) within said container at least xenon-131 gas.
Claim 104
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least xenon-131 gas.
Claim 105
Dependent Claim
57 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of alkali metal hydride deposited on the inner wall of the said container, where said alkali metal is selected from the group consisting of cesium, potassium, sodium, and rubidium; and (c) within said container at least xenon-131 gas.
Claim 106
Dependent Claim
39 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least xenon-131 gas.
Claim 107
Dependent Claim
39 words
A cell for use in a magnetic alignment device comprising: (a) a magnetic moment gas container; (b) a layer of rubidium hydride deposited on the inner wall of said container; and (c) within said container at least xenon-131 gas.
Claim 108
Dependent Claim
31 words
The cell of any of claims 49, 53, 57 or 61 wherein said container is made from a material selected from the group consisting of glass, fused silicon, quartz and sapphire.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |