US2641623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary battery cell
Assignee: Olin Industries Inc
•
Filing: 1949-06-16
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Granted: 1953-06-09
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Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Gunnar A F Winckler
- 👤 Otto K Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A CATHODE FOR AN AIR-DEPOLARIZED CELL COMPRISING A SUBSTANTIALLY DRY, POROUS CUP FORMED OF A MOLDED MIXTURE OF AN AIR-DEPOLARIZED CATHODE MATERIAL AND A WATER-REPELLENT BINDER, THE AMOUNT OF THE BINDER IN THE MODLED MIXTURE BEING SUCH THAT THE CUP IS AIR-PERMEABLE BUT IS IMPERMEABLE TO ELECTROLYTE, SAID CUP BEING ADAPTED TO FORM A CONTAINER FOR A METAL ANODE AND AN ELECTROLYTE SOLUTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |