US3170857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing gallium, particularly for semiconductor purposes
Assignee: Siemens Schuckertwerke AG
•
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 03:37
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)
US2985568A
Cited
US2793179A
Cited
US2798845A
Cited
DE1111402B
Cited
US2944948A
Cited
US2952589A
Cited
US2898278A
Cited
US3069334A
Cited
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 |