US2785141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vanadium hydrocarbon conversion catalysts
Assignee: Union Oil Company of California
•
Filing: 1953-01-02
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Granted: 1957-03-12
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fieck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD FOR PREPARING AN IMPREGNATED CARRIERSUPPORTED VANADIUM CATALYST WHICH CCOMPRISES PREPARING AN IMPREGNATING SOLUTION BY DISSOLVING A VANADIUM COMPOUND SELECTED FROM THE CLASS CONSISTING OF VANADIUM OXIDED, VANADIUM SULFIDES AND AMMONIUM METAVANADATE IN SOLVENT WHICH IS ESSENTIALLY AQUEOUS AMMONIUM SUL(NH4)2S TO DISSOLVED SAID VANADIUM COMPOUND, IMPREGNATING A PREFORMED, ADSROBENT OXIDE CARRIER WITH SAID IMPREGNATING SOLUTION, DRAINING AND DRYING THE IMPREGNATED CARRIER, AND CALCINING THE DRIED CARRIER TO CONVERT IMPREGNATED VANADIUM COMPOUNDS TO VANADIUM OXIDE, AND TO REDUCE THE SULFUR CONTENT OF SAID CATALYST BELOW ABOUT 2% BY WEIGHT.
Claim 2
Independent Claim
89 words
A METHOD FOR PREPARING AN IMPREGNATED CARRIERSUPPORTED VANADIUM CATALYST WHICH CCOMPRISES PREPARING AN IMPREGNATING SOLUTION BY DISSOLVING A VANADIUM COMPOUND SELECTED FROM THE CLASS CONSISTING OF VANADIUM OXIDED, VANADIUM SULFIDES AND AMMONIUM METAVANADATE IN SOLVENT WHICH IS ESSENTIALLY AQUEOUS AMMONIUM SUL(NH4)2S TO DISSOLVED SAID VANADIUM COMPOUND, IMPREGNATING A PREFORMED, ADSROBENT OXIDE CARRIER WITH SAID IMPREGNATING SOLUTION, DRAINING AND DRYING THE IMPREGNATED CARRIER, AND CALCINING THE DRIED CARRIER TO CONVERT IMPREGNATED VANADIUM COMPOUNDS TO VANADIUM OXIDE, AND TO REDUCE THE SULFUR CONTENT OF SAID CATALYST BELOW ABOUT 2% BY WEIGHT.
References Cited (Backward Citations)
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Cited
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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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |