US3399055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of cobalt by liquid extraction from acid solutions
Assignee: Eldorado Mining and Refining Ltd
•
Filing: 1965-06-21
•
Granted: 1968-08-27
•
Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Gordon M Ritcey
- 👤 Allan W Ashbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:07
CPC Classifications
C; C01; C01G; C01G51/00; C01G51/10; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/384; C22B3/3846; C22B3/387; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |