US2800520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell depolarizer
Assignee: Individual
•
Filing: 1956-02-07
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Granted: 1957-07-23
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Expires: 1976-02-07
Abstract
No abstract record available.
Inventors
- 👤 Leslie D Mcgraw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:06
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/5825; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A PRIMARY CELL COMPRISING A ZINC ANODE, A BARIUM FERRATE CATHODE AND AN ELECTROLYTE CONSISTING OF AN AQUEOUS SOLUTION CONTAINING 20-40 PERCENT POTASSIUM HYDROXIDE AND 10 TO 20 PERCENT OF POTASSIUM PYROPHOSPHATE.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |