US3376218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of lubricating oil and reactivation of the catalyst
Assignee: Standard Oil Co
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Filing: 1965-03-17
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Granted: 1968-04-02
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Roland L Menzl
- 👤 Madison E Marks
- 👤 Robert H Crowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:50
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; B01J23/92; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR THE HYDROTREATING OF A HIGH-VISCOSITY PETROLEUM LUBRICATING OIL WHEREIN SAID LUBRICATING OIL IS HYDROTREATED UNDER HYDROGENTATION CONDITIONS IN THE PRESENCE OF A HYDROGENATION CATLYST UNTIL THE ACTIVITY OF SAID CATALYST DECLINES TO AN UNDESIRABLE LEVEL, SAID CATLYST CONSISTING ESSENTIALLY OF HYDROGENATION COMPONENTS SELECTED FROM THE GROUP CONSISTING OF COBALT, MOLYBDENUM, THE OXIDES SULFIDES AND MIXTURES THEREOF, ON AN ALUMINA BASE, THE IMPROVEMENT WHICH COMPRISES SUBSEQUENTLY EMPLOYING SAID CATALYST TO HYDROTREAT A LOW-VISCOSITY PETROLEUM LUBRICATING OIL FOR A TIME SUFFICIENT TO AT LEAST PARTIALLY RESTORE THE HYDROGENATING ACTIVITY OF SAID CATALYST AND, AFTER THE HYDROTREATING OF SAID LOW-VISCOSITY PETROLEUM LUBRICATING OIL, EMPLOYING SAID CATALYST TO HYDROTREAT SAID HIGH-VISCOSITY PETROLEUM LUBRICATING OIL.
Claim 2
Dependent Claim
113 words
A PROCESS FOR THE HYDROTREATING OF A HIGH-VISCOSITY PETROLEUM LUBRICATING OIL WHEREIN SAID LUBRICATING OIL IS HYDROTREATED UNDER HYDROGENTATION CONDITIONS IN THE PRESENCE OF A HYDROGENATION CATLYST UNTIL THE ACTIVITY OF SAID CATALYST DECLINES TO AN UNDESIRABLE LEVEL, SAID CATLYST CONSISTING ESSENTIALLY OF HYDROGENATION COMPONENTS SELECTED FROM THE GROUP CONSISTING OF COBALT, MOLYBDENUM, THE OXIDES SULFIDES AND MIXTURES THEREOF, ON AN ALUMINA BASE, THE IMPROVEMENT WHICH COMPRISES SUBSEQUENTLY EMPLOYING SAID CATALYST TO HYDROTREAT A LOW-VISCOSITY PETROLEUM LUBRICATING OIL FOR A TIME SUFFICIENT TO AT LEAST PARTIALLY RESTORE THE HYDROGENATING ACTIVITY OF SAID CATALYST AND, AFTER THE HYDROTREATING OF SAID LOW-VISCOSITY PETROLEUM LUBRICATING OIL, EMPLOYING SAID CATALYST TO HYDROTREAT SAID HIGH-VISCOSITY PETROLEUM LUBRICATING OIL.
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |