Patent US2620368A successfully refreshed from Google Patents.
US2620368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline dry cell
Assignee: Individual
•
Filing: 1947-12-23
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Granted: 1952-12-02
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Expires: 1967-12-23
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:44
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/22; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PRIMARY CELL COMPRISING A POROUS ANODE FORMED OF COMPRESSED AMALGAMATED ZINC PARTICLES, A COHERENT CONDUCTIVE CATHODE CONTAINING AN ELECTROLYTICALLY-REDUCIBLE OXYGEN-YIELDING COMPOUND, A BODY OF ELECTROLYTE GEL INTERPOSED BETWEEN AND IN CONTACT WITH SAID ANODE AND CATHODE, AND AN UNGELLED ELECTROLYTE IMPREGNATING SAID POROUS ANODE, SAID ELECTROLYTE GEL COMPRISING
Claim 2
Dependent Claim
49 words
A PRIMARY CELL COMPRISING A POROUS ANODE FORMED OF COMPRESSED AMALGAMATED ZINC PARTICLES, A COHERENT CONDUCTIVE CATHODE CONTAINING AN ELECTROLYTICALLY-REDUCIBLE OXYGEN-YIELDING COMPOUND, A BODY OF ELECTROLYTE GEL INTERPOSED BETWEEN AND IN CONTACT WITH SAID ANODE AND CATHODE, AND AN UNGELLED ELECTROLYTE IMPREGNATING SAID POROUS ANODE, SAID ELECTROLYTE GEL COMPRISING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |