US3377281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Sinclair Research Inc
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Filing: 1965-02-26
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Granted: 1968-04-09
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Howard D Gower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
C; C10; C10M; C10M163/00; C10M2203/00; C10M2203/10; C10M2203/108; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A LUBRICATING OIL COMPOSITON CONSITING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL OF LUBRICATING VISCOSITY, ABOUT 0.2% TO 3% BY WEIGHT OF A BASIC CALCIUM AROMATIC SULFONATE HAVING A BASE NUMBER OF ABOUT 10 TO 60 AND A CALCIUM CONTENT OF ABOUT 1 TO 5%, ABOUT 0.1 TO 1% BY WEIGHT OF A OVERBASED CALCIUM AROMATIC SULFONATE HAVING A BASE NUMBER OF AOBUT 200 TO 500 AND A CALCIUM CONTENT OF ABOUT 8 TO 30%, AND ABOUT 0.25 TO 2.5% BY WEIGHT OF AN ALKENYL SUCCINIMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
91 words
A LUBRICATING OIL COMPOSITON CONSITING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL OF LUBRICATING VISCOSITY, ABOUT 0.2% TO 3% BY WEIGHT OF A BASIC CALCIUM AROMATIC SULFONATE HAVING A BASE NUMBER OF ABOUT 10 TO 60 AND A CALCIUM CONTENT OF ABOUT 1 TO 5%, ABOUT 0.1 TO 1% BY WEIGHT OF A OVERBASED CALCIUM AROMATIC SULFONATE HAVING A BASE NUMBER OF AOBUT 200 TO 500 AND A CALCIUM CONTENT OF ABOUT 8 TO 30%, AND ABOUT 0.25 TO 2.5% BY WEIGHT OF AN ALKENYL SUCCINIMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
68 words
THE COMPOSITION OF CLAIM 1 WHICH CONTAINS A SMALL AMOUNT OF ZINC DITHIOPHOSPHATE DIESTER IN WHICH THE ORGANIC GROUPS CONTAIN FROM ABOUT 4 TO 20 CARBON ATOMS, SAID AMOUNT BEING SUFFICIENT TO PROVIDE A PHOSPHORUS LEVEL OF FROM ABOUT 0.02 TO 0.2% BY WEIGHT AND ABOUT .001 TO 1 PERCENT BY WEIGHT OF A METHACRYLATE ESTER POLYMER IN WHICH THE ESTER RADICAL CONTAINS 4 TO 20 CARBON ATOMS.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |