US3336237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Shell USA Inc
•
Filing: 1963-05-16
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Granted: 1967-08-15
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Malone Bobby
- 👤 Julian G Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:01
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 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-METHYL5-VINYL PYRIDINE AND A MIXTURE OF LAURYL AND STEARYL METHACRYLATES THE MOLE RATIO OF THE PYRIDINE COMPOUND TO THE METHACRYLATE MIXTURE BEING FROM 1:10 TO 2:1 RESPECTIVELY AND SAID COPOLYMER HAVING A MOLECULAR WEIGHT RANGE OF FROM 100,000 TO 650,000 AND FROM ABOUT 0.01% TO ABOUT 2% OF A PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF THE DILAURYLAMINE SALT OF DICRESYL ACID PHOSPHATE, THE DILAURYLAMINE SALT OF DITOLYL ACID PHOSPHATE AND THE DIMETHYL HEXADECYLAMINE SALT OF DITOLYL ACID PHOSPHATE.
Claim 2
Dependent Claim
103 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-METHYL5-VINYL PYRIDINE AND A MIXTURE OF LAURYL AND STEARYL METHACRYLATES THE MOLE RATIO OF THE PYRIDINE COMPOUND TO THE METHACRYLATE MIXTURE BEING FROM 1:10 TO 2:1 RESPECTIVELY AND SAID COPOLYMER HAVING A MOLECULAR WEIGHT RANGE OF FROM 100,000 TO 650,000 AND FROM ABOUT 0.01% TO ABOUT 2% OF A PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF THE DILAURYLAMINE SALT OF DICRESYL ACID PHOSPHATE, THE DILAURYLAMINE SALT OF DITOLYL ACID PHOSPHATE AND THE DIMETHYL HEXADECYLAMINE SALT OF DITOLYL ACID PHOSPHATE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |