Patent US3245903A successfully refreshed from Google Patents.
US3245903A
Expired / Lapsed
US
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Hydrocatalytic refining of lubricating oils
Assignee: BP PLC
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Filing: 1963-03-27
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Granted: 1966-04-12
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Champagnat Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J37/20; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS FOR THE MILD HYDROCATALYTIC REFINING OF LUBRICATING OILS TO IMPROVE THEIR COLOR AND THEIR OXIDATION AND COLOR STABILITY PROPERTIES WITHOUT APPRECIABLE DROP IN VISCOSITY WHICH COMPRISES FIRST ACTIVATING A CATALYST BY CONTACTING SAME WITH FROM 80 TO 120 KG. OF CARBON DISULFIDE PER METRIC TON OF CATALYST AT A TEMPERATURE OF FROM 300* TO 400*C. AND IN THE PRESENCE OF HYDROGEN, SAID CATALYST CONTAINING FROM 4 TO 20% WT. OF IRON OXIDE, 3 TO 20% WT. OF MOLYBDENUM OXIDE, 1 TO 12% WT. OF COBALT OXIDE, AND THE BALANCE ALUMINA, SAID OXIDES BEING SUPPORTED ON SAID ALUMINA AND THE RATIO BY WEIGHT OF MOLYBDENUM OXIDE TO COBALT OXIDE BEING AT LEAST 1.5:1, AND THEREAFTER CONTACTING THE LUBRICATING OIL FEEDSTOCK IN THE PRESENCE OF HYDROGEN AND AT A TEMPERATURE BELOW THE ACTIVITY TEMPERATURE OF SAID CATALYST AND WITHIN THE RANGE 150*-350*C. WITH THE ACTIVATED CATALYST TO HYDROCATALYTICALLY REFINE SAME.
Claim 2
Dependent Claim
150 words
A PROCESS FOR THE MILD HYDROCATALYTIC REFINING OF LUBRICATING OILS TO IMPROVE THEIR COLOR AND THEIR OXIDATION AND COLOR STABILITY PROPERTIES WITHOUT APPRECIABLE DROP IN VISCOSITY WHICH COMPRISES FIRST ACTIVATING A CATALYST BY CONTACTING SAME WITH FROM 80 TO 120 KG. OF CARBON DISULFIDE PER METRIC TON OF CATALYST AT A TEMPERATURE OF FROM 300* TO 400*C. AND IN THE PRESENCE OF HYDROGEN, SAID CATALYST CONTAINING FROM 4 TO 20% WT. OF IRON OXIDE, 3 TO 20% WT. OF MOLYBDENUM OXIDE, 1 TO 12% WT. OF COBALT OXIDE, AND THE BALANCE ALUMINA, SAID OXIDES BEING SUPPORTED ON SAID ALUMINA AND THE RATIO BY WEIGHT OF MOLYBDENUM OXIDE TO COBALT OXIDE BEING AT LEAST 1.5:1, AND THEREAFTER CONTACTING THE LUBRICATING OIL FEEDSTOCK IN THE PRESENCE OF HYDROGEN AND AT A TEMPERATURE BELOW THE ACTIVITY TEMPERATURE OF SAID CATALYST AND WITHIN THE RANGE 150*-350*C. WITH THE ACTIVATED CATALYST TO HYDROCATALYTICALLY REFINE SAME.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |