US2572918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas depolarized cell
Assignee: Union Carbide Corp
•
Filing: 1946-11-13
•
Granted: 1951-10-30
•
Expires: 1966-11-13
Abstract
No abstract record available.
Inventors
- 👤 Charles R Fisher
- 👤 George W Heise
- 👤 Erwin A Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M12/065; H01M50/00; H01M50/10; H01M50/147; H01M50/148; H01M50/1535; H01M50/1537; H01M4/00; H01M4/02; H01M2004/024; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A REPLACEABLE ELECTRODE UNIT FOR A GAS DE POLYARIZED CELL COMPRISING A GAS PERMEABLE CARBON ELECTRODE IMPERVIOUS TO WETTING BY ELECTROLYTE UNIFORMLY SPACED FROM A ZINC ELECTRODE ON EACH OF TWO OPPOSITE SIDES OF THE CARBON, A COLLAR OF INSULATING MATERIAL SURROUNDING THE CARBON AND SUPPORTING ALL ELECTRODES THEREFROM, SAID COLLAR HAVING SPACING PROJECTIONS EXTENDING SUBSTANTIALLY PARALLEL TO AND BETWEEN THE CARBON AND EACH ZINC ELECTRODE, AND CLAMPING MEANS SECURING EACH ZINC ELECTRODE TO ITS SPACING PROJECTION OF SAID COLLAR, CLAMPING MEANS ALSO SUPPORTING
Claim 2
Dependent Claim
84 words
A REPLACEABLE ELECTRODE UNIT FOR A GAS DE POLYARIZED CELL COMPRISING A GAS PERMEABLE CARBON ELECTRODE IMPERVIOUS TO WETTING BY ELECTROLYTE UNIFORMLY SPACED FROM A ZINC ELECTRODE ON EACH OF TWO OPPOSITE SIDES OF THE CARBON, A COLLAR OF INSULATING MATERIAL SURROUNDING THE CARBON AND SUPPORTING ALL ELECTRODES THEREFROM, SAID COLLAR HAVING SPACING PROJECTIONS EXTENDING SUBSTANTIALLY PARALLEL TO AND BETWEEN THE CARBON AND EACH ZINC ELECTRODE, AND CLAMPING MEANS SECURING EACH ZINC ELECTRODE TO ITS SPACING PROJECTION OF SAID COLLAR, CLAMPING MEANS ALSO SUPPORTING
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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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |