US3844955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure grease with improved wear characteristics
Assignee: Texaco Inc
•
Filing: 1973-05-29
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Granted: 1974-10-29
•
Expires: 1993-05-29
Abstract
Abstract Grease composition: A. LUBRICATING OIL BASE B. GREASE THICKENER C. 1-15 PERCENT MOLYBDENUM DISULFIDE D. 1-15 PERCENT CALCIUM HYDROXIDE.
Inventors
- 👤 W Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:53
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/06; C10M2201/063; C10M2201/065; C10M2201/066; C10M2201/14; C10M2205/00; C10M2205/17; C10M2205/173; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/22; C10M2215/223; C10M2215/224; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A GRASE LUBRICATING COMPOSITION COMPRISING A LUBRICATING OIL VEHICLE, A THICKENER THEREFOR, AND AN EXTREME PRESURE AND WATER REDUCING AMOUNT OF A COMBINATION OF MOLYBDENUM DISULFIDE AND CALCIUM HYDROXIDE WHEREIN THE WEIGHT RATIO OF MOLYBDENUM DISULFIDE TO CALCIUM HYDROXIDE IS FROM ABOUT 0.5 TO ABOUT 10.
Claim 2
Dependent Claim
46 words
A GRASE LUBRICATING COMPOSITION COMPRISING A LUBRICATING OIL VEHICLE, A THICKENER THEREFOR, AND AN EXTREME PRESURE AND WATER REDUCING AMOUNT OF A COMBINATION OF MOLYBDENUM DISULFIDE AND CALCIUM HYDROXIDE WHEREIN THE WEIGHT RATIO OF MOLYBDENUM DISULFIDE TO CALCIUM HYDROXIDE IS FROM ABOUT 0.5 TO ABOUT 10.
Claim 3
Dependent Claim
40 words
A grease as in claim 1 wherein the molybdenum disulfide comprises from about 1 to 15 weight percent of the total grease composition and the calcium hydroxide comprises from about 1 to 15 weight percent of the total grease composition.
Claim 4
Dependent Claim
58 words
A grease as in claim 2 wherein the molybdenum disulfide comprises from about 2 to 10 weight percent of the total grease and the calcium hydroxide comprises from about 2 to 6 weight percent of the total grease and the weight ratio of molybdenum disulfide to calcium hydroxide in the grease composition is from about 1.0 to 5.0.
Claim 5
Dependent Claim
68 words
A grease as in claim 3 which comprises a mineral lubricating oil comprising about 80 weight percent of the total grease, dimethyldioctadecyl ammonium bentonite thickener comprising about 6 weight percent of the total grease, calcium hydroxide comprising about 3 weight percent of the total grease, molybdenum disulfide comprising about 7 weight percent of the total grease and antimony dialkyldithiocarbamate comprising about 4 weight percent of the total grease.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |