Patent US2615931A successfully refreshed from Google Patents.
US2615931A
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Heavy duty gas depolarized dry battery
Assignee: Union Carbide Corp
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Filing: 1948-12-07
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Granted: 1952-10-28
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Expires: 1968-12-07
Abstract
No abstract record available.
Inventors
- 👤 Marcus R Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M12/065; H01M12/08; H01M12/085; H01M6/00; H01M6/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A METHOD OF TREATING A DEFERRED ACTION, GAS DEPOLARIZED TYPE DRY CELL HAVING A POROUS CATHODE PROVIDED WITH A WET MIX PORTION IN WHICH THE GASEOUS DEPOLARIZER ENTERS INTO AQUEOUS SOLUTION AND A DRIER POROUS CATHODE DIFFUSER PORTION INTO WHICH THE DEPOLARIZING GAS ENTERS LARGELY BEFORE IT CONTACTS WITH THE MOISTURE IN THE WET MIX PORTION OF THE CATHODE, SAID METHOD INCLUDING STORING SAID CELL IN AN ATMOSPHERE OF AN INERT GAS PRIOR TO ITS ACTIVATION, THE COMBINATION THEREWITH OF THE IMPROVEMENT FOR INCREASING THE OUTPUT OF SAID CELL WHICH COMPRISES FLUSHING OUT ANY GAS POCKETS OF INERT GAS FROM THE CATHODE DIFFUSER PORTION BY FLOWING DEPOLARIZING GAS IN A STREAM THROUGH SAID DIFFUSER PORTION ON ACTIVATION OF SAID CELL.
Claim 2
Dependent Claim
121 words
IN A METHOD OF TREATING A DEFERRED ACTION, GAS DEPOLARIZED TYPE DRY CELL HAVING A POROUS CATHODE PROVIDED WITH A WET MIX PORTION IN WHICH THE GASEOUS DEPOLARIZER ENTERS INTO AQUEOUS SOLUTION AND A DRIER POROUS CATHODE DIFFUSER PORTION INTO WHICH THE DEPOLARIZING GAS ENTERS LARGELY BEFORE IT CONTACTS WITH THE MOISTURE IN THE WET MIX PORTION OF THE CATHODE, SAID METHOD INCLUDING STORING SAID CELL IN AN ATMOSPHERE OF AN INERT GAS PRIOR TO ITS ACTIVATION, THE COMBINATION THEREWITH OF THE IMPROVEMENT FOR INCREASING THE OUTPUT OF SAID CELL WHICH COMPRISES FLUSHING OUT ANY GAS POCKETS OF INERT GAS FROM THE CATHODE DIFFUSER PORTION BY FLOWING DEPOLARIZING GAS IN A STREAM THROUGH SAID DIFFUSER PORTION ON ACTIVATION OF SAID CELL.
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |