Patent US2866841A successfully refreshed from Google Patents.
US2866841A
Expired / Lapsed
US
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Electrode separator
Assignee: Gould National Batteries Inc
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Filing: 1956-05-02
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Granted: 1958-12-30
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Expires: 1976-05-02
Abstract
No abstract record available.
Inventors
- 👤 Harold E Zahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:08
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/423; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
IN AN ALKALINE ELECTROLYTIC CELL CONTAINING ELECTRODES OF OPPOSITE POLARITY, A SEPARATOR DISPOSED BETWEEN SAID ELECTRODES AND COMPRISING A PERFORATED CAST FILM OF NYLON MATERIAL HAVING A THICKNESS OF NO MORE THAN 0.025 INCH.
Claim 2
Dependent Claim
34 words
IN AN ALKALINE ELECTROLYTIC CELL CONTAINING ELECTRODES OF OPPOSITE POLARITY, A SEPARATOR DISPOSED BETWEEN SAID ELECTRODES AND COMPRISING A PERFORATED CAST FILM OF NYLON MATERIAL HAVING A THICKNESS OF NO MORE THAN 0.025 INCH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |