US3485727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage control in aluminum electrolysis cells during flex-raise period
Assignee: Reynolds Metals Co
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Filing: 1968-07-17
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Granted: 1969-12-23
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Expires: 1988-07-17
Abstract
No abstract record available.
Inventors
- 👤 Eugene Clifford Uhrenholdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:07
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/20; H; H05; H05B; H05B7/00; H05B7/02; H05B7/144; H05B7/148; H05B7/156; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1961893A
Cited
US2545412A
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US2545413A
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US2904490A
Cited
US2918421A
Cited
US3294656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |