US2848525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature alkaline cell
Assignee: Union Carbide Corp
•
Filing: 1953-09-21
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Granted: 1958-08-19
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Erwin A Schumacher
- 👤 Roswell J Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:15
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN AIR-DEPOLARIZED PRIMARY GALVANIC CELL COMPRISING A METALLIC CONTAINER HAVING APERTURES THEREIN FOR ADMISSION OF AIR, AN AIR-DEPOLARIZABLE CARBON CATHODE LINING THE INTERIOR WALLS OF SAID CONTAINER AND SUBSTANTIALLY FILLING SAID APERTURES, A SEPARATOR ADJACENT SAID CATHODE, AN IMMOBILIZED AQUEOUS ALKALINE ELECTROLYTE IN SAID CONTAINER, A CONSUMABLE ZINC ANODE OF COILED ZINC WIRE IMMERSED IN SAID ELECTROLYTE AND ELLECTRICALLY CONNECTED TO A METAL STUD, AND AN IMPERVIOUS CLOSURE FOR SAID CONTAINER HAVING AN ELECTRICAL TERMINAL THEREON, SAID STUD BEING IN ELECTRICAL CONTACT WITH SAID TERMINAL.
Claim 2
Dependent Claim
85 words
AN AIR-DEPOLARIZED PRIMARY GALVANIC CELL COMPRISING A METALLIC CONTAINER HAVING APERTURES THEREIN FOR ADMISSION OF AIR, AN AIR-DEPOLARIZABLE CARBON CATHODE LINING THE INTERIOR WALLS OF SAID CONTAINER AND SUBSTANTIALLY FILLING SAID APERTURES, A SEPARATOR ADJACENT SAID CATHODE, AN IMMOBILIZED AQUEOUS ALKALINE ELECTROLYTE IN SAID CONTAINER, A CONSUMABLE ZINC ANODE OF COILED ZINC WIRE IMMERSED IN SAID ELECTROLYTE AND ELLECTRICALLY CONNECTED TO A METAL STUD, AND AN IMPERVIOUS CLOSURE FOR SAID CONTAINER HAVING AN ELECTRICAL TERMINAL THEREON, SAID STUD BEING IN ELECTRICAL CONTACT WITH SAID TERMINAL.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |