US2707699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of thiophenes from aromatic hydrocarbons
Assignee: Hydrocarbon Research Inc
•
Filing: 1952-02-19
•
Granted: 1955-05-03
•
Expires: 1972-02-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Johnson
- 👤 Seymour C Schuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:43
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/163; C10; C10G; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR DESULFURIZING AN OROMATIC HYDROCARBON OIL, WHICH COMPRISES BRINGING HYDROGEN AND AN AEOMATIC HYDROCARBON OIL CONTAINING CYCLIC SULFUR COMPOUNDS INTO CONTACT WITH AN ALUMINA OF HIGH SURFACE AREA AND FREE OF ADDED CARALYST AND PROMOTERS IN A REACTION ZONE MAINTAINED AT A TEMPERATURE IN THE RANGE OF 900 TO 1300*F., THE CONTACT OF SAID HYDROGEN AND SAID AROMATIC OIL RESULTING IN A NET COMSUMPTION OF HYDROGEN, PASSING SAID AROMATIC OIL THROUGH THE REACTION ZONE AT A SPACE VELOCITY IN THE RANGE OF ABOUT 0.2 TO 3 LIQUID VOLUMES PER HOUR PER VOLUME OF SAID ALUMINA, MAINTAINING THE PARTIAL PRESSURE OF HYDROGEN IN SAID REACTION ZONE IN THE RANGE OF 100 TO 750 P.S.I., AND RECOVERING FROM THE RESULTING REACTION EFFLUENT SAID AROMATIC OIL WITH A SUBSTANTIALLY REDUCED SULFUR CONTENT.
Claim 2
Dependent Claim
131 words
A PROCESS FOR DESULFURIZING AN OROMATIC HYDROCARBON OIL, WHICH COMPRISES BRINGING HYDROGEN AND AN AEOMATIC HYDROCARBON OIL CONTAINING CYCLIC SULFUR COMPOUNDS INTO CONTACT WITH AN ALUMINA OF HIGH SURFACE AREA AND FREE OF ADDED CARALYST AND PROMOTERS IN A REACTION ZONE MAINTAINED AT A TEMPERATURE IN THE RANGE OF 900 TO 1300*F., THE CONTACT OF SAID HYDROGEN AND SAID AROMATIC OIL RESULTING IN A NET COMSUMPTION OF HYDROGEN, PASSING SAID AROMATIC OIL THROUGH THE REACTION ZONE AT A SPACE VELOCITY IN THE RANGE OF ABOUT 0.2 TO 3 LIQUID VOLUMES PER HOUR PER VOLUME OF SAID ALUMINA, MAINTAINING THE PARTIAL PRESSURE OF HYDROGEN IN SAID REACTION ZONE IN THE RANGE OF 100 TO 750 P.S.I., AND RECOVERING FROM THE RESULTING REACTION EFFLUENT SAID AROMATIC OIL WITH A SUBSTANTIALLY REDUCED SULFUR CONTENT.
References Cited (Backward Citations)
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US2315506A
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US2574448A
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |