Patent US3077508A successfully refreshed from Google Patents.
US3077508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell electrodes
Assignee: Leesona Corp
•
Filing: 1960-05-13
•
Granted: 1963-02-12
•
Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 Harry G Oswin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ELECTRODE FOR A FUEL CELL COMPRISING A BI-POROUS CARBON PLATE HAVING A CATALYTICALLY ACTIVATING METAL CHEMICALLY BONDED THEREIN, SAID CARBON PLATE BEING FORMED BY CARBONIZING AN ION EXCHANGE RESIN CONTAINING METAL IONS UPON THE SURFACE OF A POROUS COMPACTED CARBON PLATE.
Claim 2
Dependent Claim
42 words
AN ELECTRODE FOR A FUEL CELL COMPRISING A BI-POROUS CARBON PLATE HAVING A CATALYTICALLY ACTIVATING METAL CHEMICALLY BONDED THEREIN, SAID CARBON PLATE BEING FORMED BY CARBONIZING AN ION EXCHANGE RESIN CONTAINING METAL IONS UPON THE SURFACE OF A POROUS COMPACTED CARBON PLATE.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |