US2740747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytically sweetening of naphtha
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-11-20
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Granted: 1956-04-03
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Expires: 1972-11-20
Abstract
No abstract record available.
Inventors
- 👤 Sumner B Sweetser
- 👤 Ii Stanley O Bronson
- 👤 Robert C Morbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IMPROVED PROCESS FOR THE COMPLETE REMOVAL OF MERCAPTAN COMPOUNDS FROM PETROLEUM OILS BOILING IN THE MOTOR FUEL BOILING RANGE WHICH COMPRISES CONTACTING THESE OILS WITH A CATALYST SELECTED FROM THE CLASS CONSISTING OF COBALT MOLYBDATE ON ALUMINA, MOLYBDENUM OXIDE ON ALUMINA AND A MIXTURE OF TUNGSTEN SULFIDE AND NICKEL SULFIDE AT A PRESSURE BELOW ABOUT 500 P. S. I. G., A TEMPERATURE IN THE RANGE FROM ABOUT 400 TO 700* F., AND IN THE ABSENCE OF ADDED HYDROGEN, REMOVING THE TREATED OIL AND SEPARATING HYDROGEN SULFIDE THEREFROM, THEREAFTER CONTACTING THE OIL WITH CAUSTIC IN THE PRESENCE OF ADDED AIR, WHEREBY A DOCTOR PASS PRODUCT IS SECURED.
Claim 2
Dependent Claim
106 words
IMPROVED PROCESS FOR THE COMPLETE REMOVAL OF MERCAPTAN COMPOUNDS FROM PETROLEUM OILS BOILING IN THE MOTOR FUEL BOILING RANGE WHICH COMPRISES CONTACTING THESE OILS WITH A CATALYST SELECTED FROM THE CLASS CONSISTING OF COBALT MOLYBDATE ON ALUMINA, MOLYBDENUM OXIDE ON ALUMINA AND A MIXTURE OF TUNGSTEN SULFIDE AND NICKEL SULFIDE AT A PRESSURE BELOW ABOUT 500 P. S. I. G., A TEMPERATURE IN THE RANGE FROM ABOUT 400 TO 700* F., AND IN THE ABSENCE OF ADDED HYDROGEN, REMOVING THE TREATED OIL AND SEPARATING HYDROGEN SULFIDE THEREFROM, THEREAFTER CONTACTING THE OIL WITH CAUSTIC IN THE PRESENCE OF ADDED AIR, WHEREBY A DOCTOR PASS PRODUCT IS SECURED.
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |