US3202549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-resistant dry cells
Assignee: Union Carbide Corp
•
Filing: 1961-05-01
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Granted: 1965-08-24
•
Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Lewis F Urry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:22
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06; H; H01; H01M; H01M50/00; H01M50/10; H01M50/102; H01M50/107; H01M50/50; H01M50/543; H01M50/562; H01M50/564; H01M50/567; H01M6/00; H01M6/04; H01M6/06; H01M6/08; H01M50/547; H01M50/548
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A LEAK-RESISTANT DRY CELL COMPRISING A CUPPED CONTAINER-ELECTRODE OF A CONSUMABLE METAL HAVING THEREIN A DEPOLARIZER MIX AND ELECTROLYTE, THE TOP SURFACES OF WHICH ARE DISPOSED BLOW THE TOP OPEN END OF SAID CONTAINERELECTRODE, AND HAVING A THIN SHIELDING LAYER OF A PLASTIC MATERIAL ADHEREED TO THE EXTERIOR SIDE WALLS AND BOTTOM THEREOF, AND A JACKET SURROUNDING SAID CUPPED CONTAINERELECTRODE AND HAVING A TOP CLOSURE LOCKED IN LIQUID-TIGHT ENGAGEMENT THEREWITH, SAID TOP CLOSURE BEING DISPOSED OVER THE TOP OPEN END OF SAID CONTAINER-ELECTRODE AND DEFINING A FREE SPACE ABOVE SAID DEPOLARIZER MIX AND ELECTROLYTE; THE IMPROVEMENT WHICH COMPRISES THE PROVISION OF ADDITIONAL THIN SHIELDING LAYERS OF PLASTIC MATERIAL ADHERED TO THE INTERIOR SIDE WALLS ABOVE SAID DEPOLARIZER MIX WITHIN SAID FREE SPACE AND TO THE INTERIOR BOTTOM OF SAID CONTAINER-ELECTRODE.
Claim 2
Dependent Claim
131 words
IN A LEAK-RESISTANT DRY CELL COMPRISING A CUPPED CONTAINER-ELECTRODE OF A CONSUMABLE METAL HAVING THEREIN A DEPOLARIZER MIX AND ELECTROLYTE, THE TOP SURFACES OF WHICH ARE DISPOSED BLOW THE TOP OPEN END OF SAID CONTAINERELECTRODE, AND HAVING A THIN SHIELDING LAYER OF A PLASTIC MATERIAL ADHEREED TO THE EXTERIOR SIDE WALLS AND BOTTOM THEREOF, AND A JACKET SURROUNDING SAID CUPPED CONTAINERELECTRODE AND HAVING A TOP CLOSURE LOCKED IN LIQUID-TIGHT ENGAGEMENT THEREWITH, SAID TOP CLOSURE BEING DISPOSED OVER THE TOP OPEN END OF SAID CONTAINER-ELECTRODE AND DEFINING A FREE SPACE ABOVE SAID DEPOLARIZER MIX AND ELECTROLYTE; THE IMPROVEMENT WHICH COMPRISES THE PROVISION OF ADDITIONAL THIN SHIELDING LAYERS OF PLASTIC MATERIAL ADHERED TO THE INTERIOR SIDE WALLS ABOVE SAID DEPOLARIZER MIX WITHIN SAID FREE SPACE AND TO THE INTERIOR BOTTOM OF SAID CONTAINER-ELECTRODE.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |