US3698955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen-responsive electrical current supply
Assignee: Philip Morris USA Inc
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Filing: 1970-06-15
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Granted: 1972-10-17
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Expires: 1990-06-15
Abstract
Abstract A SUPPLY PROVIDING ELECTRICAL CURRENT IN ACCORDANCE WITH BOTH LOAD RESISTANCE AND ENVIRONMENTAL OXYGEN CONCENTRATION INCORPORATES AN ELECTROCHEMICAL CELL HAVING AN ANODE, A CATHODE AND AN ELECTROLYTE COMPOSED OF A RARE EARTH FLUORIDE. A RUGGED MINIATURE SUPPLY ADAPTED FOR USE IN SPACE-LIMITED APPLICATIONS IS PROVIDED BY THIN FILM DEPOSITION OF THE CELL ELEMENTS.
Inventors
- 👤 Arnys Clifton Lilly Jr
- 👤 Calvin O Tiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:07
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182; H01M6/183; H01M6/50
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |