Patent US2695227A successfully refreshed from Google Patents.
US2695227A
Expired / Lapsed
US
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Indium purification using proteinaceous materials
Assignee: American Smelting and Refining Co
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Filing: 1952-01-31
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Granted: 1954-11-23
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 Yurii E Lebedeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:14
CPC Classifications
C; C22; C22B; C22B58/00; C01; C01G; C01G15/00; C01G15/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR TREATING AN IMPURE MINERAL ACID SOLUTIN OF INDIUM HAVING DISSOLVED THEREIN ABOUT 10-100 GRAMS PER LITER OF INDIUM AND LESS THAN 0.5 GRAMS PER LITER IN THE AGGREGATE OF METAL WHICH IS DIFFICULTLY SEPARABLE FROM INDIUM BY PYROMETALLURGICAL PROCESSES, WHICH CONSISTS OF ADDING TO THE SOLUTION FROM 1-5 GRAMS PER LITER OF A PROTEINACEOUS MATERIAL, FORMING IN THE SOLUTION INSOLUBLE COMPOUNDS OF SAID DIFFICULTY SEPARABLE METAL CONSISTING OF SAID PROTENACEOUS MATERIAL AND SAID DIFFICULTY SEPARABLE METAL, AND SEPARATING THE RESULTING INSOLUBLE MATTER FROM THE SOLUTION,THEREBY REMOVING SAID DIFFICULTLY SEPARABLE METAL FROM SAID INDIUM SOLUTION.
Claim 2
Dependent Claim
97 words
A PROCESS FOR TREATING AN IMPURE MINERAL ACID SOLUTIN OF INDIUM HAVING DISSOLVED THEREIN ABOUT 10-100 GRAMS PER LITER OF INDIUM AND LESS THAN 0.5 GRAMS PER LITER IN THE AGGREGATE OF METAL WHICH IS DIFFICULTLY SEPARABLE FROM INDIUM BY PYROMETALLURGICAL PROCESSES, WHICH CONSISTS OF ADDING TO THE SOLUTION FROM 1-5 GRAMS PER LITER OF A PROTEINACEOUS MATERIAL, FORMING IN THE SOLUTION INSOLUBLE COMPOUNDS OF SAID DIFFICULTY SEPARABLE METAL CONSISTING OF SAID PROTENACEOUS MATERIAL AND SAID DIFFICULTY SEPARABLE METAL, AND SEPARATING THE RESULTING INSOLUBLE MATTER FROM THE SOLUTION,THEREBY REMOVING SAID DIFFICULTLY SEPARABLE METAL FROM SAID INDIUM SOLUTION.
References Cited (Backward Citations)
US1065678A
Cited
US2271970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |