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US3531329A
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Fuel cell anode composition and method of preparation
Assignee: Gulf Research and Development Co
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Filing: 1966-11-07
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Granted: 1970-09-29
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Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Charles M Selwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/8663; H01M4/8668; H01M4/88; H01M4/8875; H01M4/8878; H01M4/8896; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2396629A
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US2615932A
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US2641623A
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US2782180A
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US2838590A
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US3113048A
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FR1261704A
Cited
US3297484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |