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US3553020A
Expired / Lapsed
US
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Spill-proof battery
Assignee: Motors Liquidation Co
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Filing: 1968-12-20
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Granted: 1971-01-05
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Expires: 1988-12-20
Abstract
Abstract A SPILL-PROOF STORAGE BATTERY INCLUDING A UTILIZED ASSEMBLY OF SERIALLY-ARRANGED, NESTED, CELL CONTAINERS, EACH CONTAINER HAVING CELL GROUPS COMPRESSED THEREIN. THE CELL GROUPS INCLUDING POSITIVE AND NEGATIVE PLATES AND A SEPARATOR BETWEEN THE PLATES, WHICH SEPARATOR HAS DISCRETE LAYERS OF POROUS MATERIALS COACTING TO IMMOBILIZE THE BATTERY''S ELECTROLYTE AND PREVENT INTERNAL SHORTING BETWEEN THE PLATES.
Inventors
- 👤 Ralph L Corbin
- 👤 Richard A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:47
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/12; H01M50/00; H01M50/10; H01M50/102; H01M50/112; H01M50/114; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |