US2880123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary battery with controllable cathode potential
Assignee: Union Carbide Corp
•
Filing: 1954-04-30
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Granted: 1959-03-31
•
Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Carl A Grulke
- 👤 Russell P Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:11
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/50; H01M6/5088; H01M4/00; H01M4/02; H01M4/36; H01M4/362; H01M4/366; H01M4/48; H01M4/50; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190621348A
Cited
US1160907A
Cited
US1221062A
Cited
US1232904A
Cited
US1538895A
Cited
US2547907A
Cited
US2678343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |