US3415685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-depolarizable galvanic cell
Assignee: Union Carbide Corp
•
Filing: 1964-05-19
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Granted: 1968-12-10
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:03
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1380034A
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US2275281A
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US2825748A
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US2829186A
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US2914596A
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US2938064A
Cited
US3300343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |