US2876272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell
Assignee: Duracell Inc USA
•
Filing: 1955-04-15
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Granted: 1959-03-03
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Bence Lynton
- 👤 Robert H Pugh
- 👤 Karl S Willson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:21
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08; H01M50/00; H01M50/10; H01M50/183; H01M50/186; H01M50/19; H01M50/193
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DRY CELL COMPRISING A ZINC CUP CONSTITUTING AN ELECTRODE, A MASS OF MIX AND A CARBON ELECTRODE WITHIN THE CUP, A PAPER LINING IMPREGNATED WITH PASTE ELECTROLYTE INTERPOSED BETWEEN THE MASS OF MIX AND THE INTERIOR OF THE CUP, AN EXPANSION SPACE WITHIN THE ZINC CUP ABOVE THE MASS OF MIX, A LAYER OF CEREAL PASTE DISPOSED WITHIN THE CUP BETWEEN THE MASS OF MIX AND TEH EXPANSION SPACE AND A LAYER OF SOFT PLASTIC SEALING MATERIAL BETWEEN THE MASS OF MIX AND THE LAYER OF CEREAL PASTE, SAID LAYER OF SEALING MATERIAL EXTENDING BETWEEN SAID CARBON ELECTRODE AND THE INTERIOR OF SAID ZINC CUP.
Claim 2
Dependent Claim
106 words
A DRY CELL COMPRISING A ZINC CUP CONSTITUTING AN ELECTRODE, A MASS OF MIX AND A CARBON ELECTRODE WITHIN THE CUP, A PAPER LINING IMPREGNATED WITH PASTE ELECTROLYTE INTERPOSED BETWEEN THE MASS OF MIX AND THE INTERIOR OF THE CUP, AN EXPANSION SPACE WITHIN THE ZINC CUP ABOVE THE MASS OF MIX, A LAYER OF CEREAL PASTE DISPOSED WITHIN THE CUP BETWEEN THE MASS OF MIX AND TEH EXPANSION SPACE AND A LAYER OF SOFT PLASTIC SEALING MATERIAL BETWEEN THE MASS OF MIX AND THE LAYER OF CEREAL PASTE, SAID LAYER OF SEALING MATERIAL EXTENDING BETWEEN SAID CARBON ELECTRODE AND THE INTERIOR OF SAID ZINC CUP.
References Cited (Backward Citations)
US1766418A
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US2704780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |