US3677918A
Expired / Lapsed
US
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Method for directly electrochemically extracting gallium from a circulating aluminate solution in the bayer process by eliminating impurities
Assignee: CHUO TATEMONO Co Ltd
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Filing: 1969-09-18
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Granted: 1972-07-18
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Expires: 1989-09-18
Abstract
Abstract GALLIUM IS ELECTROCHEMICALLY RECOVERED FROM A CIRCULATING ALUMINATE SOLTUION IN THE BAYER PROCESS FOR PRODUCING ALUMINA DIRECTLY WITHOUT ANY PRECIPITATE FORMATION, FILTRATION AND REDISSOLUTION FOR THE PURPOSE OF CHANGING THE CONCENTRATION OF MAJOR COMPONENT. GALLIUM IS ELECTRO-DEPOSITED AT CATHODE SURFACE WHEN THE SOLUTION IS USED AS AN ELECTROLYTE.
Inventors
- 👤 Shigenobu Miyake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:43
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/22
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |