Patent US3105813A successfully refreshed from Google Patents.
US3105813A
Expired / Lapsed
US
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Hydrogenation of lubricating oils
Assignee: Standard Oil Co
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Filing: 1957-07-29
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Granted: 1963-10-01
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Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Gutberlet Louis Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR IMPROVING THE VISCOSITY INDEX OF LUBRICATING OIL HAVING A VISCOSITY INDEX IN THE RANGE OF -50 TO 100 WITH HYDROGEN AT A TEMPERATURE BETWEEN ABOUT 600* AND 900*F. AND A PRESSURE BETWEEN ABOUT 500 AND 3000 P.S.I.G. IN THE PRESENCE OF A CATALYST COMPRISED OF A MINOR AMOUNT OF THE OXIDES AND SULFIDES OF COBALT AND MOLYBDENUM, 0.1 TO 10% BY WEIGHT OF AN INORGANIC FLUORIDE, AND AN ALUMINA CARRIER, AND RECOVERING A LUBRICATING OIL HAVING AN INCREASED VISCOSITY INDEX.
Claim 2
Dependent Claim
83 words
A PROCESS FOR IMPROVING THE VISCOSITY INDEX OF LUBRICATING OIL HAVING A VISCOSITY INDEX IN THE RANGE OF -50 TO 100 WITH HYDROGEN AT A TEMPERATURE BETWEEN ABOUT 600* AND 900*F. AND A PRESSURE BETWEEN ABOUT 500 AND 3000 P.S.I.G. IN THE PRESENCE OF A CATALYST COMPRISED OF A MINOR AMOUNT OF THE OXIDES AND SULFIDES OF COBALT AND MOLYBDENUM, 0.1 TO 10% BY WEIGHT OF AN INORGANIC FLUORIDE, AND AN ALUMINA CARRIER, AND RECOVERING A LUBRICATING OIL HAVING AN INCREASED VISCOSITY INDEX.
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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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |