US2954339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of petroleum hydrocarbons employing an arsenic-containing catalyst
Assignee: Texaco Inc
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Filing: 1958-02-14
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Granted: 1960-09-27
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 David K Beavon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
A PROCESS FOR THE SEPARATE UPGRADING OF A STRAIGHT RUN NAPHTHA AND A HYDROCARBON FRACTION SELECTED FROM THE GROUP CONSISTING OF THERMALLY CRACKED NAPHTHA, CATALYTICALLY CRECKED NAPHTHA, KEROSENE, GAS OIL AND COAL TAR DISTILLATE WHICH COMPRISES CONTACTING A STRAIGHT RUN NAPHTHA WITH A COBALT-MOLYBDENUM-ALUMINA CATALYST AT A TEMPERATURE BETWEEN ABOUT 500*F. AND 8000*F. AND A PRESSURE BETWEEN ABOUT 300 AND 800 P.S.I.G. IN THE PRESENCE OF HYDROGEN FOR A PERIOD OF TIME SUFFICIENT TO DEPOSIT ON SAID CATALYST BETWEEN 0.01 AND 0.8 WEIGHT PERCENT ARSENIC, DISCONTINUING THE FLOW OF SAID STRAIGHT RUN NAPHTHA AND THEN CONTACTING SAID CATALYST CONTAINING ARSENIC WITH A HYDROCARBON FRACTION SELECTED FROM SAID GROUP AT A TEMPERATURE BETWEEN 500*F. AND 800*F. AND A PRESSURE BETWEEN 50 AND 800 P.S.I.G. IN THE PRESENCE OF HYDROGEN.
References Cited (Backward Citations)
US2697683A
Cited
US2739132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |