Patent US3410770A successfully refreshed from Google Patents.
US3567433A
Expired / Lapsed
US
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Method of recovering metals from spent hydrorefining catalysts
Assignee: Universal Oil Products Co
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Filing: 1968-02-14
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Granted: 1971-03-02
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Expires: 1988-02-14
Abstract
Abstract RECOVERY OF METALS FROM A SPENT METALS-LADEN HYDROREFINING CATALYST. CARBONACEOUS MATTER IS BURNED FROM THE SPENT CATALYST WHICH IS THEREAFTER EXTRACTED WITH AQUEOUS AMMONIA OR AMMONIUM CARBONATE SOLUTION TO RECOVER MOLYBDENUM, NICKEL AND VANADIUM THEREFROM.
Inventors
- 👤 George Gutnikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:56
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/30; C22B34/34; C22B34/345; C22B23/00; C22B23/04; C22B23/0407; C22B23/0446; C22B3/00; C22B3/04; C22B3/12; C22B3/14; C22B34/20; C22B34/22; C22B34/225; C22B7/00; C22B7/006; C22B7/008; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |