US3481787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell comprising a raney catalyst alloy consisting of platinum and a member selected from the group consisting of zirconium,tungsten and rhenium
Assignee: Engelhard Industries Inc
•
Filing: 1964-06-11
•
Granted: 1969-12-02
•
Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Otto J Adlhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/92; H01M4/928; H01M2004/8678; H01M2004/8684; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0008; H01M2300/0011; H01M2300/0017; H01M2300/0065; H01M2300/0082; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2391458A
Cited
US2537733A
Cited
US2708253A
Cited
US3150011A
Cited
US3287171A
Cited
US3305400A
Cited
US3274031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |