Patent US1778145A successfully refreshed from Google Patents.
Patent US2945080A successfully refreshed from Google Patents.
US2945080A
Expired / Lapsed
US
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Method of making battery separators
Assignee: Yardney International Corp
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Filing: 1957-04-19
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Granted: 1960-07-12
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Expires: 1977-04-19
Abstract
No abstract record available.
Inventors
- 👤 Chapman Christopher Lio Carter
- 👤 Howard Antonie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF PRODUCING AN ELECTRODE ASSEMBLY, FOR ELECTRIC BATTERIES WHICH COMPRISES THE STEPS OF COATING A PERMEABLE CARRIER WITH A FILM OF POLYVINYL ACETATE, FORMING A ELECTRODE ASSEMBLY BY INTERPOSING SAID CARRIER BETWEEN ELECTRODES OF OPPOSITE POLARITIES, IMMERSING SAID ELECTRODE ASSEMBLY IN AN ALKALINE ELECTROLYTE AND SUBJECTING SAID ASSEMBLY TO THE ACTION OF SAID ELECTROLYTE UNTIL SAID FILM HAS BEEN HYDROLYZED TO A DEGREE UPWARDS OF APPROXIMATELY 35%.
Claim 2
Independent Claim
69 words
A METHOD OF PRODUCING AN ELECTRODE ASSEMBLY, FOR ELECTRIC BATTERIES WHICH COMPRISES THE STEPS OF COATING A PERMEABLE CARRIER WITH A FILM OF POLYVINYL ACETATE, FORMING A ELECTRODE ASSEMBLY BY INTERPOSING SAID CARRIER BETWEEN ELECTRODES OF OPPOSITE POLARITIES, IMMERSING SAID ELECTRODE ASSEMBLY IN AN ALKALINE ELECTROLYTE AND SUBJECTING SAID ASSEMBLY TO THE ACTION OF SAID ELECTROLYTE UNTIL SAID FILM HAS BEEN HYDROLYZED TO A DEGREE UPWARDS OF APPROXIMATELY 35%.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |