US3253960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additives for dry cells
Assignee: Union Carbide Corp
•
Filing: 1964-04-02
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Granted: 1966-05-31
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Hugh F Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:03
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/045; H01M4/00; H01M4/02; H01M4/62; H01M4/628; H01M6/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
IN COMBINATION IN A PRIMARY CELL, A ZINC ANODE, AN ELECTROLYTE WET MANGANESE DIOXIDE DEPOLARIZER, AND A CARBON CURRENT COLLECTOR IMPREGNATED WITH A GAS SUPPRESSING AMOUNT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRIDINE; BETA-DINITRO-DEPHENYLAMINE SULFOXIDE; 2-CHLORO, 5-NITROPYRIDINE; 4-ETHOXY, 2 NITROACETANILIDE; TEREPHTHALONITRILE; MALONANILIDE; TRIBENZYLAMINE; DIPHENYLACETONITRILE, TRIPHENYLCHLOROMETHANE; 1,3-DIPHENOXYPROPANE; AND 1,3-DIHYDROXYISOQUINOLINE.
References Cited (Backward Citations)
US2897250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |