US3285854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Shell USA Inc
•
Filing: 1963-07-15
•
Granted: 1966-11-15
•
Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Bobby W Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:54
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08L; C08L39/00; C08L39/04; C08L39/08; C10M2203/00; C10M2203/10; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/40; C10M2207/402; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO ABOUT 10% OF AN OIL-SOLUBLE COPOLYMER OF 2-METHYL-5VINYLPYRIDINE AND A MIXTURE OF LAURYL AND STEARYL METHACRYLATES HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 5X10**4 TO 2.5X10**6 AND FROM 0.1% TO ABOUT 1% OF 1,1''-THIO-BIS(3-METHYL-5-TERTBUTYLPHENOL).
Claim 2
Dependent Claim
51 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO ABOUT 10% OF AN OIL-SOLUBLE COPOLYMER OF 2-METHYL-5VINYLPYRIDINE AND A MIXTURE OF LAURYL AND STEARYL METHACRYLATES HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 5X10**4 TO 2.5X10**6 AND FROM 0.1% TO ABOUT 1% OF 1,1''-THIO-BIS(3-METHYL-5-TERTBUTYLPHENOL).
Claim 3
Dependent Claim
15 words
THE COMPOSITION OF CLAIM 1 CONTAINING ABOUT 0.05-1% EACH OF DICRESYL PHOSPHATE AND TRICRESYL PHOSPHATE.
References Cited (Backward Citations)
US2285855A
Cited
GB760554A
Cited
GB808665A
Cited
US3057926A
Cited
US3029257A
Cited
US3179591A
Cited
US3132102A
Cited
US3065275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |