US2756183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrotreating lubricating oil to improve color and neutralization number using a platinum catalyst on alumina
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-05-13
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Granted: 1956-07-24
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Expires: 1972-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:15
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF PRODUCING HIGH QUALITY LUBRICATING OIL OF IMPROVED COLOR AND LOW NEUTRALIZATION NUMBER WHICH COMPRISES: TREATING A LUBRICATING OIL HAVING A NEUTRALIZATION NUMBER ABOVE ABOUT 0.5 WITH HYDROGEN IN CONTACT WITH A CATALYST CONSISTING OF ABOUT 0.05 TO 1.0% OF PLATINUM SUPPORTED ON ACTIVE ALUMINA AT CONTROLLED HYDROGENATION CONDITIONS SELECTED FROM THE RANGE OF 400-700* F., 50-250 P.S.I., AND 0.5-5 VOLUMES OF LIQUID FEED PER VOLUME OF CATALYST PER HOUR, CHARACTERIZED BY A HYDROGEN CONSUMPTION OF LESS THAN ABOUT 150 STANDARD CUBIC FEET PER BARREL, A SULFUR REDUCTION WHICH DOES NOT EXCEED ABOUT
Claim 2
Dependent Claim
95 words
THE PROCESS OF PRODUCING HIGH QUALITY LUBRICATING OIL OF IMPROVED COLOR AND LOW NEUTRALIZATION NUMBER WHICH COMPRISES: TREATING A LUBRICATING OIL HAVING A NEUTRALIZATION NUMBER ABOVE ABOUT 0.5 WITH HYDROGEN IN CONTACT WITH A CATALYST CONSISTING OF ABOUT 0.05 TO 1.0% OF PLATINUM SUPPORTED ON ACTIVE ALUMINA AT CONTROLLED HYDROGENATION CONDITIONS SELECTED FROM THE RANGE OF 400-700* F., 50-250 P.S.I., AND 0.5-5 VOLUMES OF LIQUID FEED PER VOLUME OF CATALYST PER HOUR, CHARACTERIZED BY A HYDROGEN CONSUMPTION OF LESS THAN ABOUT 150 STANDARD CUBIC FEET PER BARREL, A SULFUR REDUCTION WHICH DOES NOT EXCEED ABOUT
References Cited (Backward Citations)
US2542471A
Cited
US2574331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |