Patent US3674464A successfully refreshed from Google Patents.
US3674464A
Expired / Lapsed
US
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Process for removing copper from molybdenum
Assignee: GTE Sylvania Inc
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Filing: 1970-03-27
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Granted: 1972-07-04
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Expires: 1990-03-27
Abstract
Abstract A PROCESS FOR REMOVING COPPER FROM MOLYBDENUM IS DISCLOSED THAT COMPRISES FORMING AN AQUEOUS SOLUTION CONTAINING MOLYBDENUM AND COPPER HAVING A PH OF ABOVE ABOUT 5.7. CONTACTING THE SOLUTION WITH AN A-HYDROXY OXIME ORGANIC SOLUTION TO EXTRACT THE COPPER INTO THE ORGANIC PHASE WITHOUT THE EXTRACTION OF MOLYBDENUM AND RECOVERING THE MOLYBDENUM. ADDITONALLY THE COPPER CAN ALSO BE RECOVERED AS A COPPER SALT OF A MINERAL ACID.
Inventors
- 👤 Vincent Chiola
- 👤 Phyllis R Dodds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:48
CPC Classifications
C; C01; C01G; C01G3/00; C01G3/003; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/30; C22B34/00; C22B34/30; C22B34/34; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |