Patent US2597119A successfully refreshed from Google Patents.
US2597119A
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Electrode for air depolarized primary galvanic cells
Assignee: Union Carbide Corp
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Filing: 1949-09-01
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Granted: 1952-05-20
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Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 Erwin A Schumacher
- 👤 Roswell J Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M50/00; H01M50/10; H01M50/183; H01M50/19; H01M50/193; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN AIR-DEPOLARIZED PRIMARY GALVANIC CELL COMPRISING AN IMMOBILIZED AQUEOUS ALKALINE ELECTROLYTE; A ZINC ELECTRODE; AN ENCLOSED FREE SPACE FOR THE RECEPTION OF LIQUID EXUDED FROM SAID ELECTROLYTE; AND AN IMPROVED, AIR-DEPOLARIZED, GAS-PERMEABLE CARBON ELECTRODE HAVING A PORTION IN CONTACT WITH SAID ELECTROLYTE AND IN COMMUNICATION WITH THE AMBIENT ATMOSPHERE AND A PORTION COMMUNICATING WITH SAID FREE SPACE, SAID LAST-MENTIONED PORTION OF SAID ELECTRODE PROVIDING A PATH BETWEEN SAID FREE SPACE AND SAID FIRST-MENTIONED PORTION OF SAID CARBON ELECTRODE FOR VENTING GAS ENTRAPPED IN SAID FREE SPACE TO THE OUTSIDE ATMOSPHERE, SAID PORTION OF SAID CARBON ELECTRODE WHICH COMMUNICATES WITH SAID FREE SPACE HAVING A COATING THEREON OF A MIXTURE OF ALKALI-RESISTANT GREASE AND METAL SOAP SELECTED FROM THE GROUP CONSISTING OF STEARATE OF BARIUM, ALUMINUM, MAGNESIUM, ZINC AND MANGANESE AND COMBINATIONS THEREOF WITH FATTY ACIDS, WHICH COATING PREVENTS WETTING OF SAID PORTION OF SAID ELECTRODE BY LIQUID COLLECTED IN SAID SPACE AND CONSEQUENT BLOCKING OF SAID PATH
Claim 2
Dependent Claim
157 words
AN AIR-DEPOLARIZED PRIMARY GALVANIC CELL COMPRISING AN IMMOBILIZED AQUEOUS ALKALINE ELECTROLYTE; A ZINC ELECTRODE; AN ENCLOSED FREE SPACE FOR THE RECEPTION OF LIQUID EXUDED FROM SAID ELECTROLYTE; AND AN IMPROVED, AIR-DEPOLARIZED, GAS-PERMEABLE CARBON ELECTRODE HAVING A PORTION IN CONTACT WITH SAID ELECTROLYTE AND IN COMMUNICATION WITH THE AMBIENT ATMOSPHERE AND A PORTION COMMUNICATING WITH SAID FREE SPACE, SAID LAST-MENTIONED PORTION OF SAID ELECTRODE PROVIDING A PATH BETWEEN SAID FREE SPACE AND SAID FIRST-MENTIONED PORTION OF SAID CARBON ELECTRODE FOR VENTING GAS ENTRAPPED IN SAID FREE SPACE TO THE OUTSIDE ATMOSPHERE, SAID PORTION OF SAID CARBON ELECTRODE WHICH COMMUNICATES WITH SAID FREE SPACE HAVING A COATING THEREON OF A MIXTURE OF ALKALI-RESISTANT GREASE AND METAL SOAP SELECTED FROM THE GROUP CONSISTING OF STEARATE OF BARIUM, ALUMINUM, MAGNESIUM, ZINC AND MANGANESE AND COMBINATIONS THEREOF WITH FATTY ACIDS, WHICH COATING PREVENTS WETTING OF SAID PORTION OF SAID ELECTRODE BY LIQUID COLLECTED IN SAID SPACE AND CONSEQUENT BLOCKING OF SAID PATH
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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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |