Patent US5827625A successfully refreshed from Google Patents.
Patent US3692660A successfully refreshed from Google Patents.
US3692660A
Expired / Lapsed
US
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Electrolytic cell
Assignee: Phillips Petroleum Co
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Filing: 1970-09-25
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Granted: 1972-09-19
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Expires: 1990-09-25
Abstract
Abstract AN ELECTROLYTIC CELL HAVING A HEAT EXCHANGING SHELL DISPOSED THEREIN AND DIVIDING THE CELL CONTAINER INTO AN UPPER AND LOWER ELECTROLYTE CHAMBER. ELECTRODE TUBE MEANS EXTEND THROUGH SAID SHELL AND ARE IN COMMUNICATION WITH SAID ELECTROLYTE CHAMBER. ELECTRODE MEANS ARE DISPOSED IN SAID ELECTRODE TUBE MEANS IN A MANNER TO PRESERVE SAID COMMUNICATION. DOWNCOMER TUBE MEANS, INTERSPERSED AMONG SAID ELECTRODE TUBE MEANS, ALSO EXTEND THROUGH THE SHELL INTO COMMUNICATION WITH SAID ELECTROLYTE CHAMBER. BAFFLE ARRANGEMENTS IN SAID SHELL, AND ARRANGEMENTS OF SAID ELECTRODE TUBE MEANS AND SAID DOWNCOMER TUBES, IMPROVE THE EFFICIENCY OF THE CELL. D R A W I N G
Inventors
- 👤 Robert B Macmullin
- 👤 Homer M Fox
- 👤 Forrest N Ruehlen
- 👤 William V Childs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:51
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/27; C25B3/28; C25B9/00; C25B9/13; C25B9/17
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |