USRE27835E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pq co os
Assignee: —
•
Filing: 1971-11-29
•
Granted: 1973-12-11
•
Expires: 1991-11-29
Abstract
Abstract A PRIMARY AND SECONDARY ELECTROCHEMICAL CELL WHICH COMPRISES IN COMBINATION AN ANODE OF AMETAL CAPABLE OF REDUCING A CATHODE DEPOLARIZER, SULFUR DIOXIDE ALONE OR IN A CO-SOLVENT, AN ELECTROLYTE SALT, AND SOLUBLE DEPOLARIZERS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:06
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0561; H01M10/0563; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |