Patent US3533740A successfully refreshed from Google Patents.
US3533740A
Expired / Lapsed
US
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Process for manufacturing active manganese dioxide
Assignee: Les Piles Wonder SA
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Filing: 1967-12-20
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Granted: 1970-10-13
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Expires: 1987-12-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred Grund
- 👤 Pierre Francois Malessan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:23
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/02; C01G45/024; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; C01P; C01P2002/00; C01P2002/70; C01P2002/72; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1986889A
Cited
FR1306706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |