US3527690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depolarizing cathodes
Assignee: Pechiney SA
•
Filing: 1966-08-15
•
Granted: 1970-09-08
•
Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Marc Griffon Du Bellay
- 👤 Roland Bachelard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:34
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B1/265; C25B11/00; C25B11/02; H; H01; H01M; H01M14/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA701506A
Cited
US2273797A
Cited
US2373320A
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US2415494A
Cited
US2773025A
Cited
US3058895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |