US2812379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inter-electrode battery separator and process for making same
Assignee: Yardney International Corp
•
Filing: 1953-04-10
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Granted: 1957-11-05
•
Expires: 1973-04-10
Abstract
No abstract record available.
Inventors
- 👤 Mendelsohn Meyer
- 👤 Solomon Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:11
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/02; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; C08J2329/00; C08J2329/02; C08J2329/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
IN AN ELECTRIC BATTERY HAVING AN ALKALINE ELECTROLYTE, A SEPARATOR COMPRISING A SHEET OF POLYVINYL ALCOHOL MODIFIED BY PROLONGED IMMERSION IN A SUBSTANTIALLY ANHYDROUS MONOHYDROXY ALCOHOL OF NOT MORE THAN FOUR CARBON ATOMS.
Claim 2
Dependent Claim
33 words
IN AN ELECTRIC BATTERY HAVING AN ALKALINE ELECTROLYTE, A SEPARATOR COMPRISING A SHEET OF POLYVINYL ALCOHOL MODIFIED BY PROLONGED IMMERSION IN A SUBSTANTIALLY ANHYDROUS MONOHYDROXY ALCOHOL OF NOT MORE THAN FOUR CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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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) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |