Patent US4056639A successfully refreshed from Google Patents.
US3580740A
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Zinc electrode containing lead sulfide to reduce gassing at the zinc electrode in heat sterilized silver zinc alkaline battery
Assignee: ESB Inc
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Filing: 1968-09-04
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Granted: 1971-05-25
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Expires: 1988-09-04
Abstract
Abstract A ZINC ELECTRODE CONTAINING A LEAD SULFIDE ADDITIVE TO REDUCE GASSING AT THE ZINC ELECTRODE WHICH IS USED AS THE NEGATIVE ELECTRODE IN A HEAT STERILIZED SILVER-ZINC ALKALINE BATTERY. THE LEAD SULFIDE EFFECTIVELY REDUCES GASSING THE ZINC ELECTRODE WITHOUT ADVERSELY AFFECTING THE CAPACITY OF THE HEAT STERILIZED BATTERY, WHEREAS THE CONVENTIONAL MERCURIC OXIDE ADDITIVE REDUCES THE CAPACITY OF THE HEAT STERILIZED BATTERY. THE LEAD SULFIDE ADDITIVE MAY BE USED IN AMOUNTS RANGING FROM ABOUT 1 TO ABOUT 10% BY WEIGHT OF THE ACTIVE MATERIAL ADDITIVE MIXTURE.
Inventors
- 👤 Herbert I James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/24; H01M10/32; H01M4/00; H01M4/02; H01M4/36; H01M4/48; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |