US1358626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depolarizing agent for dry batteries and process of making same
Assignee: National Carbon Co Inc
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Filing: 1917-10-31
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Granted: 1920-11-09
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Expires: 1937-10-31
Abstract
No abstract record available.
Inventors
- 👤 Ellis Carleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/02; C01G45/024; C01P; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1923-11-09 | 1924-05-10 | 1924-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-11-09 | 1928-05-10 | 1928-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-11-09 | 1932-05-10 | 1932-11-09 | $7700.00 | Window Closed / Lapsed |