Patent US292846A successfully refreshed from Google Patents.
Patent US2905545A successfully refreshed from Google Patents.
US2905545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating metals from ores and concentrates
Assignee: Nova Beaucage Mines Ltd
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Filing: 1956-05-17
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Granted: 1959-09-22
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Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jack W Cookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:14
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/20; C22B34/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METHOD COMPRISING HALOGENATION OF METAL VALUES FOR REMOVAL OF A METAL FROM METAL-CONTAINING MATERIALS THE COMBINATION OF STEPS COMPRISING CONTACT ING SAID MATERIALS WITH VAPORIZED CARBON TETRACHLORIDE TO FROM A CHLORIDE OF THE METAL, SAID MATERIALS BEING MAINTAINED AT A TEMPERATURE AT LEAST AS HIGH AS THE VAPORIZATION TEMPERATURE OF THE CHLORIDE OF SAID METAL AND SAID VAPORIZED CARBON TETRATCHLORIDE IN A QUANTITY IN EXCESS OF THAT REQUIRED TO FORM THE CHLORIDE OF THE METAL; AND CONDENSING THE EXCESS VAPORIZED CARBON TETRACHLORIDE AND THE VAPORIZED CHLORIDE OF THE METAL BY CONTACTING WITH LIQUID CARBON TETRACHLORIDE.
Claim 2
Dependent Claim
97 words
IN A METHOD COMPRISING HALOGENATION OF METAL VALUES FOR REMOVAL OF A METAL FROM METAL-CONTAINING MATERIALS THE COMBINATION OF STEPS COMPRISING CONTACT ING SAID MATERIALS WITH VAPORIZED CARBON TETRACHLORIDE TO FROM A CHLORIDE OF THE METAL, SAID MATERIALS BEING MAINTAINED AT A TEMPERATURE AT LEAST AS HIGH AS THE VAPORIZATION TEMPERATURE OF THE CHLORIDE OF SAID METAL AND SAID VAPORIZED CARBON TETRATCHLORIDE IN A QUANTITY IN EXCESS OF THAT REQUIRED TO FORM THE CHLORIDE OF THE METAL; AND CONDENSING THE EXCESS VAPORIZED CARBON TETRACHLORIDE AND THE VAPORIZED CHLORIDE OF THE METAL BY CONTACTING WITH LIQUID CARBON TETRACHLORIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |