US2967147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing lubricating oil
Assignee: Texaco Inc
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Filing: 1958-01-24
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Granted: 1961-01-03
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Edward L Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:37
CPC Classifications
C; C10; C10G; C10G71/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR THE TREATMENT OF A LUBRICATING OIL STOCK TO ENHANCE THE QUALITY THEREOF WHICH CONSISTS ESSENTIALLY OF SUBJECTING A PARAFFIN BASE RESIDUAL LUBRICATING OIL FRACTION TO REFINING TREATMENT CONSISTING OF IN SEQUENCE SOLVENT DEASPHALTING, SOLVENT REFINING, SOLVENT DEWAXING, CLAY CONTACTING AND CLAY FILTERING, AND THEREAFTER CONTACTING THE RESULTING TREATED OIL WITH ADDED HYDROGEN IN THE PRESENCE OF A MILD HYDROGENATION CATALYST UNDER CONDITIONS OF ABOUT 400*F. TO 700*F., ABOUT 1000 TO ABOUT 3000 P.S.I.G. AND A SPACE VELOCITY OF ABOUT 0.2 TO 1.0 TO EFFECT REACTIONS CAUSING THE HYDROGENATED PRODUCT TO HAVE INCREASED STABILITY TO THIN-FILM OXIDATION AT HIGH TEMPERATURES.
Claim 2
Dependent Claim
102 words
A PROCESS FOR THE TREATMENT OF A LUBRICATING OIL STOCK TO ENHANCE THE QUALITY THEREOF WHICH CONSISTS ESSENTIALLY OF SUBJECTING A PARAFFIN BASE RESIDUAL LUBRICATING OIL FRACTION TO REFINING TREATMENT CONSISTING OF IN SEQUENCE SOLVENT DEASPHALTING, SOLVENT REFINING, SOLVENT DEWAXING, CLAY CONTACTING AND CLAY FILTERING, AND THEREAFTER CONTACTING THE RESULTING TREATED OIL WITH ADDED HYDROGEN IN THE PRESENCE OF A MILD HYDROGENATION CATALYST UNDER CONDITIONS OF ABOUT 400*F. TO 700*F., ABOUT 1000 TO ABOUT 3000 P.S.I.G. AND A SPACE VELOCITY OF ABOUT 0.2 TO 1.0 TO EFFECT REACTIONS CAUSING THE HYDROGENATED PRODUCT TO HAVE INCREASED STABILITY TO THIN-FILM OXIDATION AT HIGH TEMPERATURES.
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |