Patent US2897250A successfully refreshed from Google Patents.
US2897250A
Expired / Lapsed
US
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Corrosion inhibitors for dry cells
Assignee: Duracell Inc USA
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Filing: 1957-03-27
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Granted: 1959-07-28
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Expires: 1977-03-27
Abstract
No abstract record available.
Inventors
- 👤 Edward M Klopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:34
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/628; C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A DRY CELL COMPRISING A ZINC ANODE, A SEPARATOR, A DEPOLARIZING MIX, AND ELETROLYTE CONTAINING AMMONIUM CHLORIDE AND ZINC CHLORIDE AND AN INHIBITOR FOR PREVENTING CORROSION OF THE ZINC ANODE COMPRISING A MATERIAL FROM THE GROUP CONSISTING OF 8-NITRO QUINOLINE AND 8-CHLORO QUINOLINE.
Claim 2
Dependent Claim
43 words
A DRY CELL COMPRISING A ZINC ANODE, A SEPARATOR, A DEPOLARIZING MIX, AND ELETROLYTE CONTAINING AMMONIUM CHLORIDE AND ZINC CHLORIDE AND AN INHIBITOR FOR PREVENTING CORROSION OF THE ZINC ANODE COMPRISING A MATERIAL FROM THE GROUP CONSISTING OF 8-NITRO QUINOLINE AND 8-CHLORO QUINOLINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |