US4599869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic deposition of catalysts
Assignee: Individual
•
Filing: 1984-03-12
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Granted: 1986-07-15
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Expires: 2004-03-12
Abstract
Abstract A reactor for performing reactions at very low, i.e. cryogenic temperatures has a collection vessel mounted above an electron gun to collect vaporized material such as metals, metal oxides, metal salts and metal halides. The collection vessel is maintained at a very low temperature, typically between 14° and 77° K., by a heat pump that also serves as a support for the collection vessel. A manifold introduces a reagent into the reactor between the electron gun and the vessel to react with the vaporized material and form a product. The product is condensed on the collection vessel which may then be inverted to provide a stable support for the collected product during further experimentation.
Inventors
- 👤 Geoffrey A. Ozin
- 👤 Karl Molnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:43
CPC Classifications
B; B01; B01J; B01J12/00; B01D; B01D8/00; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
134 words
A reactor comprising a housing, means to permit within evacuation of said housing, means within said housing to locate a material, vaporising means to vaporise said material, collection means positioned above said location means to collect vaporised material on a surface thereof directed toward said location means, support means to support said collection means within said housing and heat extraction means to extract heat from said collection means and maintain said surface at a predetermined temperature, said support means permitting movement of said collection means from a first position in which said surface is directed toward said location means to a second position in which said surface is directed away from said location means whereby material deposited on said surface is supported in a stable manner when said surface is in said second position.
Claim 2
Dependent Claim
134 words
A reactor comprising a housing, means to permit within evacuation of said housing, means within said housing to locate a material, vaporising means to vaporise said material, collection means positioned above said location means to collect vaporised material on a surface thereof directed toward said location means, support means to support said collection means within said housing and heat extraction means to extract heat from said collection means and maintain said surface at a predetermined temperature, said support means permitting movement of said collection means from a first position in which said surface is directed toward said location means to a second position in which said surface is directed away from said location means whereby material deposited on said surface is supported in a stable manner when said surface is in said second position.
Claim 3
Dependent Claim
17 words
A reactor according to claim 1 wherein means are provided to introduce a reactant into said housing.
Claim 4
Dependent Claim
21 words
A reactor according to claim 2 wherein said reactant introduction means is located between said location means and said collection means.
Claim 5
Dependent Claim
22 words
A reactor according to claim 1 wherein a radiation shield is provided to inhibit the radiation of heat to said collection means.
Claim 6
Dependent Claim
25 words
A reactor according to claim 4 wherein said radiation shield is thermally connected to cooling means to maintain said radiation shield at a predetermined temperature.
Claim 7
Dependent Claim
18 words
A reactor according to claim 5 wherein said shield and said collection means are connected for conjoint movement.
Claim 8
Dependent Claim
31 words
A reactor according to claim 6 wherein said shield and said collection means are rotatable about a generally horizontal axis in moving said surface from said first to said second position.
Claim 9
Dependent Claim
41 words
A reactor according to claim 7 wherein said heat extraction means includes a heat pump assembly rotatably mounted on said housing and having a first cooling stage connected to said collection means and a second cooling stage connected to said shield.
Claim 10
Dependent Claim
23 words
A reactor according to claim 8 wherein said collection means and said shield are mounted on said heat pump assembly for movement therewith.
Claim 11
Dependent Claim
25 words
A reactor according to claim 9 wherein said collection means includes a dished vessel having a base and side walls depending from the periphery thereof.
Claim 12
Dependent Claim
16 words
A reactor according to claim 10 wherein said first cooling stage is connected to said base.
Claim 13
Dependent Claim
35 words
A reactor according to claim 10 wherein said shield includes a base and side walls depending therefrom, said side walls of said shield encompassing said dished vessel and being spaced from the side walls thereof.
Claim 14
Dependent Claim
34 words
A reactor according to claim 12 wherein said base of said shield is spaced from said base of said dished vessel and said first stage of said heat pump is located between said bases.
Claim 15
Dependent Claim
45 words
A reactor according to claim 13 wherein said shield includes a radially extending lip located at the lower edge of said side wall opposite to said base, said lip extending across the edge of said side wall of said dished vessel remote from said base.
Claim 16
Dependent Claim
39 words
A reactor according to claim 12 wherein a gas inlet is located between said location means and said collection surface and comprises a toroidal manifold having a plurality of nozzles formed therein, said nozzles being directed toward said surface.
Claim 17
Dependent Claim
18 words
A reactor according to claim 15 wherein said base of said dished vessel extends radially beyond said manifold.
Claim 18
Dependent Claim
18 words
A reactor according to claim 16 wherein said vaporising means comprises a hearth of said electron gun assembly.
Claim 19
Dependent Claim
18 words
A reactor according to claim 17 wherein said hearth is located on the axis of said toroidal manifold.
Claim 20
Dependent Claim
19 words
A reactor according to claim 18 including a heat sink to extract heat from the zone surrounding said hearth.
Claim 21
Dependent Claim
20 words
A reactor according to claim 19 wherein said heat sink comprises a platform supporting components of said electron gun assembly.
Claim 22
Dependent Claim
22 words
A reactor according to claim 20 wherein said heat sink is supplied with coolant to maintain extraction of heat from said zone.
Claim 23
Dependent Claim
20 words
A reactor according to claim 21 wherein said platform supports the focussing screen and filament of said electron gun assembly.
Claim 24
Dependent Claim
32 words
A reactor according to claim 1 including a plurality of instruments movably mounted on said housing and movable into proximity with said surface when said collection means is in said second position.
Claim 25
Dependent Claim
25 words
A reactor according to claim 23 wherein said instruments are retractable to permit movement of said collection means from said first to said second position.
Claim 26
Dependent Claim
23 words
A reactor according to claim 24 wherein said collection means rotate about a horizontal axis to move between said first and second positions.
Claim 27
Dependent Claim
43 words
A reactor according to claim 25 wherein said collection means includes a dished vessel having a base and side walls extending around the periphery of said base, said support means being connected to said base to rotate said vessel about said horizontal axis.
Claim 28
Dependent Claim
24 words
A reactor according to claim 26 wherein said dished vessel is located within a radiation shield to inhibit heat transfer to said collection means.
Claim 29
Dependent Claim
21 words
A reactor according to claim 27 wherein said radiation shield is conjointly moveable with said collection means about said horizontal axis.
Claim 30
Dependent Claim
18 words
A reactor according to claim 28 wherein said radiation shield is thermally connected to said heat extraction means.
Claim 31
Dependent Claim
59 words
A reactor according to claim 29 wherein said heat extraction means comprises a heat pump and said support means includes a pair of housings connected to said heat pump and containing first and second stages of said heat pump respectively said pump being rotatable about said horizontal axis to move said collection means between said first and second positions.
Claim 32
Dependent Claim
99 words
A reactor comprising a housing, means within said housing to support a material, vaporising means to vaporise said material, collection means mounted above said support means and having heat extraction means thermally connected thereto to maintain said collection means at a predetermined temperature below the condensation temperature of the product to be prepared, and gas introduction means to introduce a gas to react with said vaporised material prior to impingement of said vaporised material on said collection means, said gas and said vaporised material reacting to produce said product and said collection means condensing said product upon impingement therewith.
Claim 33
Dependent Claim
99 words
A reactor comprising a housing, means within said housing to support a material, vaporising means to vaporise said material, collection means mounted above said support means and having heat extraction means thermally connected thereto to maintain said collection means at a predetermined temperature below the condensation temperature of the product to be prepared, and gas introduction means to introduce a gas to react with said vaporised material prior to impingement of said vaporised material on said collection means, said gas and said vaporised material reacting to produce said product and said collection means condensing said product upon impingement therewith.
Claim 34
Dependent Claim
20 words
A reactor according to claim 31 wherein said collection means is invertable to support said product in a stable position.
Claim 35
Dependent Claim
21 words
A reactor according to claim 32 wherein said gas introduction means is located between said vaporising means and said collection means.
Claim 36
Dependent Claim
28 words
A reactor according to claim 33 wherein said vaporising means includes an electron gun and said support means for said material is a hearth associated with said gun.
Claim 37
Dependent Claim
26 words
A reactor according to claim 34 wherein said gas introduction means includes a toroidal manifold having a plurality of nozzles therein directed toward said collection means.
Claim 38
Dependent Claim
21 words
A reactor according to claim 35 including means to reduce locally the pressure of the atmosphere adjacent said electron gun assembly.
Claim 39
Dependent Claim
21 words
A reactor according to claim 36 wherein said pressure reduction means includes a heat sink located adjacent said electron gun assembly.
Claim 40
Dependent Claim
17 words
A reactor according to claim 37 wherein said heat sink supports components of said electron gun assembly.
Claim 41
Dependent Claim
28 words
A reactor according to claim 38 wherein said collection means is partially enclosed within a radiation shield to inhibit heat transfer from said housing to said collection means.
Claim 42
Dependent Claim
18 words
A reactor according to claim 39 wherein said radiation shield is thermally connected to said heat extraction means.
Claim 43
Dependent Claim
22 words
A reactor according to claim 40 wherein said collection means and said shield are conjointly movable during immersion of said collection means.
Claim 44
Independent Claim
44 words
A method of preparing a product comprising the steps of vaporising a first material, reacting said first material with a vapour to form said product and collecting said product on a collection device maintained at a temperature below the condensation temperature of said vapours.
Claim 45
Independent Claim
44 words
A method of preparing a product comprising the steps of vaporising a first material, reacting said first material with a vapour to form said product and collecting said product on a collection device maintained at a temperature below the condensation temperature of said vapours.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |