Patent US4132820A successfully refreshed from Google Patents.
US4132820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite body with beta-alumina substrate and glass-coating thereon
Assignee: General Electric Co
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Filing: 1977-06-09
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Granted: 1979-01-02
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Expires: 1997-06-09
Abstract
Abstract A composite body has a beta-alumina substrate with at least one aperture therethrough, and a glass coating covering and adhering to the entire external surface of the substrate. The glass coating has sodium resistance, low alkali ion-conductance, and a coefficient of thermal expansion of 7.3 to 6.1 x 10-6 inches/inch/ DEG C.
Inventors
- 👤 Stephan P. Mitoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:01
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/113; C03; C03C; C03C8/00; C03C8/02; H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M50/00; H01M50/10; H01M50/183; H01M50/184; H01M50/19; H01M50/191; H01M50/197; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/215; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A composite body comprising a sodium beta-alumina substrate having at least one aperture therethrough, and a sodium resistant, low alkali ion-conductance glass coating covering and adhering to the entire external surface of the substrate, the glass coating having a coefficient of thermal expansion of 7.3 to 6.1 × 10 -6 inches/inch/° C.
Claim 2
Dependent Claim
52 words
A composite body comprising a sodium beta-alumina substrate having at least one aperture therethrough, and a sodium resistant, low alkali ion-conductance glass coating covering and adhering to the entire external surface of the substrate, the glass coating having a coefficient of thermal expansion of 7.3 to 6.1 × 10 -6 inches/inch/° C.
Claim 3
Dependent Claim
46 words
A composite body as in claim 1, in which the glass coating comprises 17 weight percent SiO 2 , 43 weight percent B 2 O 3 , 10 weight percent Al 2 O 3 , 28 weight percent BaO, and 2 weight percent Na 2 O.
Claim 4
Dependent Claim
23 words
A composite body as in claim 1, in which the substrate is in the form of a ring with a single aperture therethrough.
Claim 5
Dependent Claim
17 words
A composite body as in claim 1, in which the substrate has a plurality of apertures therethrough.
Claim 6
Dependent Claim
24 words
A composite body as in claim 1, in which the substrate is in the form of a ring with a plurality of apertures therethrough.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |