US3197274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-liquid recovery of metal values using hydroxyamine extractants
Assignee: General Mills Inc
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Filing: 1962-03-05
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Granted: 1965-07-27
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 James M White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:09
CPC Classifications
C; C01; C01G; C01G1/00; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/286; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A PROCESS FOR THE RECOVERY OF EXTRACTABLE METAL VALUES FROM AN AQUEOUS SOLUTION COMPRISING: (1) CONTACTING SAID AQUEOUS SOLUTION WITH A WATER IMMISCIBLE ORGANIC PHASE CONTAINING AN AMINOHYDROXYALKYL COMPOUND HAVING THE FORMULA:
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |