US3470031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a fuel electrode for a fuel cell
Assignee: Atlantic Richfield Co
•
Filing: 1967-09-11
•
Granted: 1969-09-30
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Masataro Fukuda
- 👤 Philip J Elving
- 👤 Charles L Rulfs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8875; H01M4/8878; H01M4/8892; H01M2004/8678; H01M2004/8684; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0008; H01M2300/0011; H01M2300/0014; H01M4/8647; H01M4/8652; H01M4/90; H01M4/92; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2849519A
Cited
US2980749A
Cited
US3020327A
Cited
US3160527A
Cited
US3212930A
Cited
US3120457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |