US3385780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous dual structure electrode
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-07-10
•
Granted: 1968-05-28
•
Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Feng I-Ming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2358419A
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US2782180A
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US3201282A
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US3116170A
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US3276909A
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US3297484A
Cited
US3238068A
Cited
US3297482A
Cited
US3281511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |