US3016350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofining lubricating oil
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-06-11
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Granted: 1962-01-09
•
Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Roger M Butler
- 👤 Kartzmark Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:17
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/007; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR UPGRADING AND PIMPROVING THE COLOR OF A PETROLEUM LUBRICATING OIL WHICH COMPRISES HYDROFINING A LUBRICATING OIL FEED BOILING IN THE RANGE OF ABOUT 700*F. TO 1100*F. AT 760MM. PRESSURE AT A TEMPERATURE OF ABOUT 450* TO 550*F.AND PRESSURE OF FROM ABOUT 250 TO 1500 P.S.I.G., IN CONTACT WITH A HYDROFINING CATALYST AND IN THE PRESENCE OF A HYDROGEN ATMOSPHERE CONTAINING FROM ABOUT 5 TO 50 VOLUME PERCENT OF WATER VAPOR THEREBY IMPROVING THE COLOR OF THE OIL WITHOUT REMOVING AN APPRECIABLE QUANTITY OF SULFUR.
Claim 2
Dependent Claim
87 words
A PROCESS FOR UPGRADING AND PIMPROVING THE COLOR OF A PETROLEUM LUBRICATING OIL WHICH COMPRISES HYDROFINING A LUBRICATING OIL FEED BOILING IN THE RANGE OF ABOUT 700*F. TO 1100*F. AT 760MM. PRESSURE AT A TEMPERATURE OF ABOUT 450* TO 550*F.AND PRESSURE OF FROM ABOUT 250 TO 1500 P.S.I.G., IN CONTACT WITH A HYDROFINING CATALYST AND IN THE PRESENCE OF A HYDROGEN ATMOSPHERE CONTAINING FROM ABOUT 5 TO 50 VOLUME PERCENT OF WATER VAPOR THEREBY IMPROVING THE COLOR OF THE OIL WITHOUT REMOVING AN APPRECIABLE QUANTITY OF SULFUR.
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) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |