US3173869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease composition
Assignee: Sinclair Research Inc
•
Filing: 1960-08-04
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Granted: 1965-03-16
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Expires: 1980-08-04
Abstract
No abstract record available.
Inventors
- 👤 William B Watson
- 👤 Jr Lewis D Loring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:40
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/402; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY DERIVED FROM A MIXED BASE PETROLEUM CRUDE OIL AND A MINOR AMOUNT SUFFICIENT TO THICKEN THE OIL TO GREASE CONSISTENCY OF A SOAP SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL GREASE-FORMING SOAPS, SAID OIL BEING A SECONDARY RAFFINATE OIL SEPARATED FROM AN EXTRACT OIL AND INCLUDING ABOUT 20 TO 70 VLUME PERCENT OF SAID EXTRACT OIL, SAID EXTRACT OIL BEING OBTAINED IN THE EXTRACTION OF A MIXED BASE LUBRICATING OIL STOCK WITH A SOLVENT SELECTIVE FOR AROMATICS TO PRODUCE A PRIMARY RAFFINATE OIL AND SAID EXTRACT OIL, AND SAID OIL OF LUBRICATING VISCOSITY BEING FURTHER CHARRACTERIZED BY BEING LESS SOLUBLE IN A SOLVENT WHICH IS SELECTIVE FOR AROMATICS THAN THE UNSEPARATED PORTION OF SAID EXTRACT.
Claim 2
Dependent Claim
136 words
A LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY DERIVED FROM A MIXED BASE PETROLEUM CRUDE OIL AND A MINOR AMOUNT SUFFICIENT TO THICKEN THE OIL TO GREASE CONSISTENCY OF A SOAP SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL GREASE-FORMING SOAPS, SAID OIL BEING A SECONDARY RAFFINATE OIL SEPARATED FROM AN EXTRACT OIL AND INCLUDING ABOUT 20 TO 70 VLUME PERCENT OF SAID EXTRACT OIL, SAID EXTRACT OIL BEING OBTAINED IN THE EXTRACTION OF A MIXED BASE LUBRICATING OIL STOCK WITH A SOLVENT SELECTIVE FOR AROMATICS TO PRODUCE A PRIMARY RAFFINATE OIL AND SAID EXTRACT OIL, AND SAID OIL OF LUBRICATING VISCOSITY BEING FURTHER CHARRACTERIZED BY BEING LESS SOLUBLE IN A SOLVENT WHICH IS SELECTIVE FOR AROMATICS THAN THE UNSEPARATED PORTION OF SAID EXTRACT.
References Cited (Backward Citations)
US2831811A
Cited
US2916452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |