US2554504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable cell
Assignee: Individual
•
Filing: 1948-06-29
•
Granted: 1951-05-29
•
Expires: 1968-06-29
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M10/00; H01M10/24; H01M10/34; H01M4/36; H01M4/48; H01M50/00; H01M50/30; H01M50/392; H01M50/50; H01M50/543; H01M50/552; H01M50/559; H01M50/56; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A SEALED RECHARGEABLE CELL, THE COMBINATION COMPRISING A POSITIVE ELECTRODE CONTAINING A MIXTURE OF AN OXIDE OF MERCURY AND OF A METAL POWDER CAPABLE OF BEING AMALGAMATED, A NEGATIVE ELECTRODE OF AMALGAMATED ZINC, AN IMMOBILIZED ALKALINE ELECTROLYTE INTERPOSED BETWEEN AND IN CONTACT WITH SAID ELECTRODES, THE OXIDE OF SAID METAL POWDER HAVING IN SAID ELECTROLYTE A POTENTIAL WITH RESPECT TO ZINC WHICH IS HIGHER THAN THAT OF SAID OXIDE OF MERCURY, AND AN ELECTRODE CARRIER OF INERT METAL HAVING AN AMALGAMETED SURFACE IN CONTACT WITH THE EXPOSED SURFACE OF SAID NEGATIVE ELECTRODE MAINTAINING THE EFFECTIVE DISTANCE BETWEEN THE ELECTRODES SUBSTANTIALLY CONSTANT.
Claim 2
Dependent Claim
102 words
IN A SEALED RECHARGEABLE CELL, THE COMBINATION COMPRISING A POSITIVE ELECTRODE CONTAINING A MIXTURE OF AN OXIDE OF MERCURY AND OF A METAL POWDER CAPABLE OF BEING AMALGAMATED, A NEGATIVE ELECTRODE OF AMALGAMATED ZINC, AN IMMOBILIZED ALKALINE ELECTROLYTE INTERPOSED BETWEEN AND IN CONTACT WITH SAID ELECTRODES, THE OXIDE OF SAID METAL POWDER HAVING IN SAID ELECTROLYTE A POTENTIAL WITH RESPECT TO ZINC WHICH IS HIGHER THAN THAT OF SAID OXIDE OF MERCURY, AND AN ELECTRODE CARRIER OF INERT METAL HAVING AN AMALGAMETED SURFACE IN CONTACT WITH THE EXPOSED SURFACE OF SAID NEGATIVE ELECTRODE MAINTAINING THE EFFECTIVE DISTANCE BETWEEN THE ELECTRODES SUBSTANTIALLY CONSTANT.
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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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |