US3097975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator for electric batteries
Assignee: VARTA AG
•
Filing: 1960-05-17
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Granted: 1963-07-16
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Horn Lutz
- 👤 Philipp Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:40
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/449; H01M50/457; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN A STORAGE BATTERY OF THE TYPE DESCRIBED, IN COMBINATION, A SEPARATOR CONSISTING ESSENTIALLY OF A PLURALITY OF SUPERPOSED SHEETS CONSISTING OF CRIMPED ELECTROLYTERESISTANT POLYAMIDE FIBERS; AND AN ION-PERMEABLE FLUIDIMPERMEABLE FOIL INTERPOSED BETWEEN AND CONTACTING AT LEAST TWO OF SAID PLURALITY OF SHEETS.
Claim 2
Dependent Claim
43 words
IN A STORAGE BATTERY OF THE TYPE DESCRIBED, IN COMBINATION, A SEPARATOR CONSISTING ESSENTIALLY OF A PLURALITY OF SUPERPOSED SHEETS CONSISTING OF CRIMPED ELECTROLYTERESISTANT POLYAMIDE FIBERS; AND AN ION-PERMEABLE FLUIDIMPERMEABLE FOIL INTERPOSED BETWEEN AND CONTACTING AT LEAST TWO OF SAID PLURALITY OF SHEETS.
References Cited (Backward Citations)
FR763866A
Cited
US2168366A
Cited
GB475464A
Cited
GB537377A
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US2478186A
Cited
GB700934A
Cited
US2745893A
Cited
US2937221A
Cited
US2981783A
Cited
US2942057A
Cited
US2970181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |