US3342642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell electrolyte matrix
Assignee: Wyeth Holdings LLC
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Filing: 1964-12-10
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Granted: 1967-09-19
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Barber William Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:26
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0289; H01M8/0293; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/446; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A FUEL CELL, WHEREIN THE MATRIX POSITIONED BETWEEN ELECTRODES IS A SUBSTANTIALLY SELF-SUSTAINING, ALKALI-SATURATED MATRIX CONSISTING OF: A MINOR AMOUNT OF CROSS-LINKED, WATER-INSOLUBILIZED, FIBRILLATED, POLYVINYL ALCOHOL FIBERS AND A MAJOR AMOUNT OF ALKALI-STABLE, UNFUSED FIBRILLATED ASBESTOS.
Claim 2
Dependent Claim
36 words
A FUEL CELL, WHEREIN THE MATRIX POSITIONED BETWEEN ELECTRODES IS A SUBSTANTIALLY SELF-SUSTAINING, ALKALI-SATURATED MATRIX CONSISTING OF: A MINOR AMOUNT OF CROSS-LINKED, WATER-INSOLUBILIZED, FIBRILLATED, POLYVINYL ALCOHOL FIBERS AND A MAJOR AMOUNT OF ALKALI-STABLE, UNFUSED FIBRILLATED ASBESTOS.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |