Patent US1942791A successfully refreshed from Google Patents.
US1942791A
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Electrode for secondary cells
Assignee: IG Farbenindustrie AG
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Filing: 1930-02-18
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Granted: 1934-01-09
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Expires: 1950-02-18
Abstract
No abstract record available.
Inventors
- 👤 Ackermann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:00
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/044; D; D06; D06B; D06B1/00; D06B1/02; D06F; D06F43/00; D06F43/002; D06F87/00; H01M10/00; H01M10/04; H01M10/0413; H01M4/045; H01M4/0452; H01M4/14; H01M4/16; H01M4/24; H01M4/26; H01M4/36; H01M4/362; H01M4/364; H01M4/64; H01M4/70; H01M4/80; H01M4/801; H01M4/803; H01M2004/026; H01M2004/028; H01M4/043; H01M4/049; H01M4/0492; H01M4/0497; H01M4/48; H01M4/52; H01M4/66; H01M4/661; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
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) | 1937-01-08 | 1937-07-10 | 1938-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-08 | 1941-07-10 | 1942-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-08 | 1945-07-10 | 1946-01-09 | $7700.00 | Window Closed / Lapsed |