Patent US3348973A successfully refreshed from Google Patents.
US3348973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary battery
Assignee: Calvin College and Seminary
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Filing: 1966-08-10
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Granted: 1967-10-24
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Expires: 1986-08-10
Abstract
No abstract record available.
Inventors
- 👤 Thedford P Dirkse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:03
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/24; H01M10/26; H01M4/00; H01M4/02; H01M4/24; H01M4/244; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
35 words
AN ELECTRO-CHEMICAL BATTERY CELL COMPRISING AN ALKALINE ELECTRLYTE AND ELECTRODES IMMERSED THEREIN, ONE OF SAID ELECTRODES COMPRISING A ZINC ELEMENT, AND SAID CELL INCLUDING THEREIN AN ADDITIVE HAVING THE GENERAL FORMULA OF TRIDECYLOXYPOLY (ETHYLENOXY) ETHANOL.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |