Patent US3846284A successfully refreshed from Google Patents.
US3846284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroconversion process
Assignee: Chevron USA Inc
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Filing: 1972-12-01
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Granted: 1974-11-05
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Expires: 1992-12-01
Abstract
Abstract 1. A HYDRODESULFURIZATION PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON FEEDSTOCK IN A REACTION ZONE AT A TEMPERATURE BETWEEN 500 AND 900* F., A PRESSURE BETWEEN 100 AND 3,000 P.S.I.G. AND IN THE PRESENCE OF HYDROGEN GAS, WITH A CATALYST PREPARED BY STEPS COMPRISING CHEMICALLY COPRECIPITATING GROUP VI AND VIII METALS AND ALUMINA FROM A SOLUTION OF ALUMINUM HYDROXY-CHLORIDE AS THE ALUMINA PRECURSOR, SAID PRECIPITATION BEING EFFECTED BY ADDING AMMONIA TO SAID SOLUTION.
Inventors
- 👤 J Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; B01J37/031; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J27/00; B01J27/14; B01J27/186; B01J27/188; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A HYDRODESULFURIZATION PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON FEEDSTOCK IN A REACTION ZONE AT A TEMPERATURE BETWEEN 500 AND 900* F., A PRESSURE BETWEEN 100 AND 3,000 P.S.I.G. AND IN THE PRESENCE OF HYDROGEN GAS, WITH A CATALYST PREPARED BY STEPS COMPRISING CHEMICALLY COPRECIPITATING GROUP VI AND VIII METALS AND ALUMINA FROM A SOLUTION OF ALUMINUM HYDROXY-CHLORIDE AS THE ALUMINA PRECURSOR, SAID PRECIPITATION BEING EFFECTED BY ADDING AMMONIA TO SAID SOLUTION.
Claim 2
Dependent Claim
71 words
A HYDRODESULFURIZATION PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON FEEDSTOCK IN A REACTION ZONE AT A TEMPERATURE BETWEEN 500 AND 900* F., A PRESSURE BETWEEN 100 AND 3,000 P.S.I.G. AND IN THE PRESENCE OF HYDROGEN GAS, WITH A CATALYST PREPARED BY STEPS COMPRISING CHEMICALLY COPRECIPITATING GROUP VI AND VIII METALS AND ALUMINA FROM A SOLUTION OF ALUMINUM HYDROXY-CHLORIDE AS THE ALUMINA PRECURSOR, SAID PRECIPITATION BEING EFFECTED BY ADDING AMMONIA TO SAID SOLUTION.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |