US3369876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of cu, u, co or fe with certain amino sulfide compounds
Assignee: Ashland LLC
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Filing: 1965-06-01
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Granted: 1968-02-20
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Robert A Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:54
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/0009; C01G3/00; C01G3/003; C01G3/10; C01G51/00; C01G51/01; C01G51/10; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/34; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE PROCESS FOR EXTRACTING METAL VALUES FROM AN AQUEOUS SOLUTION THEREOF WHICH COMPRISES ADJUSTING TO A VALUE OF 2-5 THE PH OF AN AQUEOUS SOLUTION CONTAINING SOLUBLE METAL VALUES SELECTED FROM THE GROUP CONSISTING OF COPPER, URANIUM, COBALT, AND IRON; INTIMATELY MIXING THE RESULTING AQUEOUS SOLUTION WITH A HYDROCARBON SOLUTION OF AN EXTRACTION AGENT HAVING THE FORMULA:
Claim 2
Dependent Claim
57 words
THE PROCESS FOR EXTRACTING METAL VALUES FROM AN AQUEOUS SOLUTION THEREOF WHICH COMPRISES ADJUSTING TO A VALUE OF 2-5 THE PH OF AN AQUEOUS SOLUTION CONTAINING SOLUBLE METAL VALUES SELECTED FROM THE GROUP CONSISTING OF COPPER, URANIUM, COBALT, AND IRON; INTIMATELY MIXING THE RESULTING AQUEOUS SOLUTION WITH A HYDROCARBON SOLUTION OF AN EXTRACTION AGENT HAVING THE FORMULA:
References Cited (Backward Citations)
US2899451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |