US3158574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium greases
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-12-01
•
Granted: 1964-11-24
•
Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Greenwood John
- 👤 Saxon-Napier Ernest Augustus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:48
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/06; C10M2201/065; C10M2201/066; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/16; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR PREPARING A LUBRICATING GREASE COMPOSITION WHICH COMPRISES: (A) INCORPORATING A GREASE-FORMING AMOUNT OF LITHIUM SOAP OF C12-C24 HYDROXY FATTY ACID IN A LUBRICATING OIL VEHICLE TO THEREBY FORM A MIXTURE, (B) HEATING SAID MIXTURE FOR A PERIOD OF TIME SUFFICIENT TO CAUSE DEHYDRATION, (C) FURTHER HEATING SAID MIXTURE TO A MAXIMUM TEMPERATURE OF ABOUT 375-425*F., (D) ADDING FROM 1-4 WEIGHT PERCENT OF GLYCEROL, BASED ON THE TOTAL WEIGHT OF SAID GREASE COMPOSITION, TO SAID MIXTURE AT ABOUT SAID MAXIMUM TEMPERATURE, AND (E) COOLING SAID MIXTURE TO FORM SAID GREASE COMPOSITION.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PREPARING A LUBRICATING GREASE COMPOSITION WHICH COMPRISES: (A) INCORPORATING A GREASE-FORMING AMOUNT OF LITHIUM SOAP OF C12-C24 HYDROXY FATTY ACID IN A LUBRICATING OIL VEHICLE TO THEREBY FORM A MIXTURE, (B) HEATING SAID MIXTURE FOR A PERIOD OF TIME SUFFICIENT TO CAUSE DEHYDRATION, (C) FURTHER HEATING SAID MIXTURE TO A MAXIMUM TEMPERATURE OF ABOUT 375-425*F., (D) ADDING FROM 1-4 WEIGHT PERCENT OF GLYCEROL, BASED ON THE TOTAL WEIGHT OF SAID GREASE COMPOSITION, TO SAID MIXTURE AT ABOUT SAID MAXIMUM TEMPERATURE, AND (E) COOLING SAID MIXTURE TO FORM SAID GREASE COMPOSITION.
References Cited (Backward Citations)
USRE23243E
Cited
US2450221A
Cited
US2470965A
Cited
US2449312A
Cited
US2487081A
Cited
US2666033A
Cited
US2895914A
Cited
US2812306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |