US3763303A
Expired / Lapsed
US
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Recovery of molybdenum from spent catalyst
Assignee: Cyprus Amax Minerals Co
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Filing: 1971-12-13
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Granted: 1973-10-02
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Expires: 1991-12-13
Abstract
Abstract A PROCESS FOR RECOVERING MOLYBDENUM FROM ORGANIC RESIDUES OF SPENT CATALYSTS COMPRISING SUBJECTING THE ORGANIC RESIDUE TO A SERIES OF AQUEOUS EXTRACTIONS EFFECTING THE REMOVAL OF THE PREDOMINANT PORTION OF MOLYBDENUM THEREFROM, FOLLOWED BY A RECOVERY OF THE MOLYBDENUM FROM THE AQUEOUS EXTRACTANT.
Inventors
- 👤 A Khuri
- 👤 H Barry
- 👤 C Hallada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:57
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/30; C22B34/34; C22B34/345; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C01; C01G; C01G39/00; C01G39/003; C01G39/02; C22B7/00; C22B7/009; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |