US2687983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic desulfurization of hydrocarbons
Assignee: ExxonMobil Oil Corp
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Filing: 1953-02-11
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Granted: 1954-08-31
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Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 William E Garwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A CATALYTIC HYDRODESULFURIZATION PROCESS WHEREIN A CHARGE OF SULFUR-CONTAINING HYDROCARBON IS CONTACTED WITH A COGELLED CHROMIAALUMINA CATALYST, THE IMPROVEMENT WHICH COMPRISES PRETREATING SAID CATALYST BY CONTACTING THE SAME AT ELEVATED TEMPERATURE WITH BETWEEN ABOUT 0.02 AND ABOUT 8 GRAMS OF HYDROGEN PER CUBIC CENTIMETER OF CATALYST, THEREAFTER SULFIDING THE CATALYST WITH BETWEEN ABOUT 0.1 AND ABOUT 2 GRAMS OF HYDROGEN SULFIDE PER CUBIC CENTIMETER OF CATALYST AND SUBSEQUENTLY CONTACTING THE CATALYST SO PRETREATED WITH SAID HYDROCARBON TO BE DESULFURIZED.
Claim 2
Dependent Claim
80 words
IN A CATALYTIC HYDRODESULFURIZATION PROCESS WHEREIN A CHARGE OF SULFUR-CONTAINING HYDROCARBON IS CONTACTED WITH A COGELLED CHROMIAALUMINA CATALYST, THE IMPROVEMENT WHICH COMPRISES PRETREATING SAID CATALYST BY CONTACTING THE SAME AT ELEVATED TEMPERATURE WITH BETWEEN ABOUT 0.02 AND ABOUT 8 GRAMS OF HYDROGEN PER CUBIC CENTIMETER OF CATALYST, THEREAFTER SULFIDING THE CATALYST WITH BETWEEN ABOUT 0.1 AND ABOUT 2 GRAMS OF HYDROGEN SULFIDE PER CUBIC CENTIMETER OF CATALYST AND SUBSEQUENTLY CONTACTING THE CATALYST SO PRETREATED WITH SAID HYDROCARBON TO BE DESULFURIZED.
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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |