US2985586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofining of lubricating oil fractions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-11-26
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Granted: 1961-05-23
•
Expires: 1978-11-26
Abstract
No abstract record available.
Inventors
- 👤 Dan H Willson
- 👤 George R L Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:44
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/007; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD FOR PRODUCING AN IMPROVED LUBRICATING OIL WHICH COMPRISES HYDROFININH A LIBRICATING OIL FRACTION IN THE PRESENCE OF A SULFUR-RESISTANT CATALYST AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 400* TO ABOUT 575*F. UNDER A PRESSURE WITHIN THE RANGE FROM ABOUT 200 TO ABOUT 1,000 POUNDS PER SQUARE INCH AND AT SPARE VELOCITY WITHIN THE RANGE FROM ABLUT 1 TO ANOUT 10V./V./HR. IN THE PRESENCE OF SUFFICENT FREE HYDROGEN-CONTAINING GAS TO PROVIDED FROM ABOUT 50 TO ABOUT 5,000 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF SAID LIBRICATING OIL FRACTION, SAID GAS ALSO CONTAINING FROM ABOUT 5% TO ABOUT 95% BY VOLUME OF HYDROGEN SULFIDE, TO FORM A PRODUCT CONTAINING AN INCREASED AMOUNT OF SULFUR AND OF IMPROVED LUBRICATING QUALITY OVER CONVENTIONALLY HYDROFINED OILS.
Claim 2
Independent Claim
125 words
A METHOD FOR PRODUCING AN IMPROVED LUBRICATING OIL WHICH COMPRISES HYDROFININH A LIBRICATING OIL FRACTION IN THE PRESENCE OF A SULFUR-RESISTANT CATALYST AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 400* TO ABOUT 575*F. UNDER A PRESSURE WITHIN THE RANGE FROM ABOUT 200 TO ABOUT 1,000 POUNDS PER SQUARE INCH AND AT SPARE VELOCITY WITHIN THE RANGE FROM ABLUT 1 TO ANOUT 10V./V./HR. IN THE PRESENCE OF SUFFICENT FREE HYDROGEN-CONTAINING GAS TO PROVIDED FROM ABOUT 50 TO ABOUT 5,000 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF SAID LIBRICATING OIL FRACTION, SAID GAS ALSO CONTAINING FROM ABOUT 5% TO ABOUT 95% BY VOLUME OF HYDROGEN SULFIDE, TO FORM A PRODUCT CONTAINING AN INCREASED AMOUNT OF SULFUR AND OF IMPROVED LUBRICATING QUALITY OVER CONVENTIONALLY HYDROFINED OILS.
References Cited (Backward Citations)
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |