US3340097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell electrode having surface co-deposit of platinum, tin and ruthenium
Assignee: Air Products and Chemicals Inc
•
Filing: 1964-01-22
•
Granted: 1967-09-05
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Richard A Hess
- 👤 Charles C Liang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:02
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A FUEL CELL ELECTRODE COMPRISING A SOLID CONDUCTIVE SUPPORT HAVING A SUBSTANTIALLY UNIFORM SURFACE CO-DEPOSIT OF METALS CONSISTING ESSENTIALLY OF POLATINUM AND TIN, SAID METALS CONSTITUING A RELATIVELY MINOR WEIGHT PERCENT OF THE SUPPORT MATERIAL AND SAID PLATINUM AND TIN BEING DEPOSITED IN A WEIGHT RATION OF ABOUT 5:4 TO 5:3, RESPECTIVELY.
Claim 2
Dependent Claim
52 words
A FUEL CELL ELECTRODE COMPRISING A SOLID CONDUCTIVE SUPPORT HAVING A SUBSTANTIALLY UNIFORM SURFACE CO-DEPOSIT OF METALS CONSISTING ESSENTIALLY OF POLATINUM AND TIN, SAID METALS CONSTITUING A RELATIVELY MINOR WEIGHT PERCENT OF THE SUPPORT MATERIAL AND SAID PLATINUM AND TIN BEING DEPOSITED IN A WEIGHT RATION OF ABOUT 5:4 TO 5:3, RESPECTIVELY.
References Cited (Backward Citations)
US2027358A
Cited
US2778786A
Cited
GB936467A
Cited
US3239382A
Cited
US3150065A
Cited
US3183123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |