Patent US3170857A successfully refreshed from Google Patents.
US3170857A
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Method for producing gallium, particularly for semiconductor purposes
Assignee: Siemens Schuckertwerke AG
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Filing: 1963-03-28
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Granted: 1965-02-23
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Dotzer Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:47
CPC Classifications
C; C22; C22B; C22B58/00; C22B3/00; C22B3/20; C22B3/26; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A METHOD FOR PRODUCING GALLIUM FROM THE SODIUMALUMINATE LIQUOR OF THE BAYER ALUMINUM OXIDE PROCESS FOR RECOVERING ALUMINA FROM ALUMINUM ORES, WHICH COMPRISES ADDING FINELY DIVIDED ALUMINUM TO THE SODIUM ALUMINATE LIQUOR TO CEMENT AND TO ABSORB THE GALLIUM CONTAINED IN SODIUM ALUMINATE LIQUOR AS SODIUM GALLATE, THE QUANTITY OF ALUMINUM ADDED BEING AT LEAST LARGE ENOUGH TO COMPLETELY ABSORB THE EVOLVING GALLIUM AS AN ALUMINUM-GALLIUM ALLOY, AND THEREAFTER SEPARATING THE GALLIUM FROM SAID ALUMINUM-GALLIUM ALLOY.
Claim 2
Independent Claim
76 words
A METHOD FOR PRODUCING GALLIUM FROM THE SODIUMALUMINATE LIQUOR OF THE BAYER ALUMINUM OXIDE PROCESS FOR RECOVERING ALUMINA FROM ALUMINUM ORES, WHICH COMPRISES ADDING FINELY DIVIDED ALUMINUM TO THE SODIUM ALUMINATE LIQUOR TO CEMENT AND TO ABSORB THE GALLIUM CONTAINED IN SODIUM ALUMINATE LIQUOR AS SODIUM GALLATE, THE QUANTITY OF ALUMINUM ADDED BEING AT LEAST LARGE ENOUGH TO COMPLETELY ABSORB THE EVOLVING GALLIUM AS AN ALUMINUM-GALLIUM ALLOY, AND THEREAFTER SEPARATING THE GALLIUM FROM SAID ALUMINUM-GALLIUM ALLOY.
References Cited (Backward Citations)
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US2798845A
Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |