US3719531A
Expired / Lapsed
US
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Cationically-conductive ceramics, their preparation and use
Assignee: Ford Motor Co
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Filing: 1969-12-22
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Granted: 1973-03-06
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Expires: 1989-12-22
Abstract
Abstract A crystalline article of manufacture consists essentially of a structural lattice and cations which are mobile in relation to the lattice under influence of an electric field. The structural lattice consists essentially of a major proportion by weight of ions of aluminum and oxygen and a minor proportion by weight of ions of metal having a valence not greater than 2 in crystal lattice combination. The cations which are mobile in relation to the crystal lattice are alkali metal cations, preferably sodium ions.
Inventors
- 👤 M Dzieciuch
- 👤 N Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:54
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/113; H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
95 words
A cationically-conductive, crystalline, composition of matter consisting essentially of the elements of oxygen, aluminum, sodium and a metal selected from the group consisting of lithium and magnesium and characterized by an X-ray diffraction powder pattern having as its major intensity peak between the angles of 50* and 60* a peak located intermediate the two major intensity peaks characteristic of the X-ray diffraction powder pattern of sodium beta-alumina between the angles of about 52* and about 56* when the X-ray wave length is about 1.7902 A and all said angles represent twice the angle of diffraction.
Claim 2
Dependent Claim
95 words
A cationically-conductive, crystalline, composition of matter consisting essentially of the elements of oxygen, aluminum, sodium and a metal selected from the group consisting of lithium and magnesium and characterized by an X-ray diffraction powder pattern having as its major intensity peak between the angles of 50* and 60* a peak located intermediate the two major intensity peaks characteristic of the X-ray diffraction powder pattern of sodium beta-alumina between the angles of about 52* and about 56* when the X-ray wave length is about 1.7902 A and all said angles represent twice the angle of diffraction.
Claim 3
Dependent Claim
77 words
A cationically-conductive, crystalline, composition of matter consisting essentially of the elements of oxygen, aluminum, sodium and metal having a valence not greater than 2 in crystal lattice combination, being selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, and characterized by an x-ray diffraction powder pattern having an intensity peak at an angle of 53.5* - 54.5* when the X-ray wave length is about 1.7902A and said angle represents twice the angle of diffraction.
Claim 4
Dependent Claim
77 words
A cationically-conductive, crystalline, composition of matter consisting essentially of the elements of oxygen, aluminum, sodium and metal having a valence not greater than 2 in crystal lattice combination, being selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, and characterized by an x-ray diffraction powder pattern having an intensity peak at an angle of 53.5* - 54.5* when the X-ray wave length is about 1.7902A and said angle represents twice the angle of diffraction.
Claim 5
Dependent Claim
99 words
A cationically-conductive, crystalline article of manufacture consisting essentially of about 91 to about 95 weight percent structural lattice and about 5 to about 9 weight percent cations of sodium which are mobile in relation to said lattice under influence of an electric field, said lattice consisting essentially of ions of aluminum and oxygen and a minor proportion of ions of metal having a valence not greater than 2 in crystal lattice combination and selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, said minor proportion constituting about 0.08 to about 10 weight percent of said article.
Claim 6
Dependent Claim
99 words
A cationically-conductive, crystalline article of manufacture consisting essentially of about 91 to about 95 weight percent structural lattice and about 5 to about 9 weight percent cations of sodium which are mobile in relation to said lattice under influence of an electric field, said lattice consisting essentially of ions of aluminum and oxygen and a minor proportion of ions of metal having a valence not greater than 2 in crystal lattice combination and selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, said minor proportion constituting about 0.08 to about 10 weight percent of said article.
Claim 7
Dependent Claim
23 words
An article of manufacture in accordance with claim 3 wherein said minor proportion constitutes between 0.086 and 9.08 weight percent of said article.
Claim 8
Dependent Claim
17 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are lithium ions.
Claim 9
Dependent Claim
17 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are magnesium ions.
Claim 10
Dependent Claim
29 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are lithium ions and constitute about 0.08 to about 2.16 weight percent of said article.
Claim 11
Dependent Claim
29 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are lithium ions and constitute about 0.33 to about 0.76 weight percent of said article.
Claim 12
Dependent Claim
29 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are magnesium ions and constitute about 0.3 to about 9 weight percent of said article.
Claim 13
Dependent Claim
29 words
An article of manufacture in accordance with claim 3 wherein said ions of metal are magnesium ions and constitute about 0.38 to about 4.3 weight percent of said article.
Claim 14
Dependent Claim
29 words
An article of manufacture in accordance With claim 3 wherein said ions of metal are magnesium ions and constitute about 0.38 to about 2.3 weight percent of said article.
Claim 15
Dependent Claim
19 words
An article of manufacture in accordance with claim 3 wherein said article has a density in excess of 2.5.
Claim 16
Dependent Claim
23 words
An article of manufacture in accordance with claim 3 wherein said article has density in the range of about 2.7 to about 3.2.
Claim 17
Dependent Claim
19 words
An article of manufacture in accordance with claim 3 wherein said article has density in excess of about 3.
Claim 18
Dependent Claim
113 words
An article of manufacture comprising a cationically-conductive unitary object consisting essentially of sintered crystals, said crystals constituting essentially of about 91 to about 95 weight percent structural lattice and about 5 to about 9 weight percent sodium ions which migrate in relation to said lattice when a difference of electrical potential is provided on opposite sides thereof, said lattice consisting essentially of ions of aluminum and oxygen and a minor proportion of ions of metal having a valence not greater than 2 in crystal lattice combination, and selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, said minor proportion constituting about 0.08 to about 10 weight percent of said article.
Claim 19
Dependent Claim
113 words
An article of manufacture comprising a cationically-conductive unitary object consisting essentially of sintered crystals, said crystals constituting essentially of about 91 to about 95 weight percent structural lattice and about 5 to about 9 weight percent sodium ions which migrate in relation to said lattice when a difference of electrical potential is provided on opposite sides thereof, said lattice consisting essentially of ions of aluminum and oxygen and a minor proportion of ions of metal having a valence not greater than 2 in crystal lattice combination, and selected from the group consisting of cobalt, lithium, magnesium, nickel and zinc, said minor proportion constituting about 0.08 to about 10 weight percent of said article.
Claim 20
Dependent Claim
29 words
An article of manufacture in accordance with claim 15 wherein said ions of metal are magnesium ions and constitute about 0.3 to about 9 weight percent of said article.
Claim 21
Dependent Claim
29 words
An article of manufacture in accordance with claim 15 wherein said ions of metal are magnesium ions and constitute about 0.38 to about 4.3 weight percent of said article.
Claim 22
Dependent Claim
29 words
An article of manufacture in accordance with claim 15 wherein said ions of metal are magnesium ions and constitute about 0.38 to about 2.3 weight percent of said article.
Claim 23
Dependent Claim
29 words
An article of manufacture in accordance with claim 15 wherein said ions of metal are lithium ions and constitute about 0.08 to about 2.16 weight percent of said article.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |