US3201334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the extraction of copper from copper ores
Assignee: Yissum Research Development Co of Hebrew University of Jerusalem
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Filing: 1963-07-02
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Granted: 1965-08-17
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Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 Henri A I Ben-Bassat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS FOR THE PRODUCTION OF COPPER FROM COPPER ORES CONTAINING OTHER METALS, THE STEPS COMPRISING LEACHING COPPER ORE BY CONTACTING THE ORE WITH AQUEOUS SULFURIC ACID AND ACETYL-ACETONE AT A PH BETWEEN 1 AND 2; SEPARATING LEACH SOLUTION CONTAINING COPPER FROM THE ORE RESIDUE; ADDING SUFFICIENT ALKALI TO ADJUST THE PH OF THE LEACH SOLUTION TO BETWEEN 3 AND 5 TO PRECIPITATE SOLID COPPER DIACETYLACETONATE FROM THE LEACH SOLUTION; AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
Claim 2
Dependent Claim
78 words
IN A PROCESS FOR THE PRODUCTION OF COPPER FROM COPPER ORES CONTAINING OTHER METALS, THE STEPS COMPRISING LEACHING COPPER ORE BY CONTACTING THE ORE WITH AQUEOUS SULFURIC ACID AND ACETYL-ACETONE AT A PH BETWEEN 1 AND 2; SEPARATING LEACH SOLUTION CONTAINING COPPER FROM THE ORE RESIDUE; ADDING SUFFICIENT ALKALI TO ADJUST THE PH OF THE LEACH SOLUTION TO BETWEEN 3 AND 5 TO PRECIPITATE SOLID COPPER DIACETYLACETONATE FROM THE LEACH SOLUTION; AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |