Patent US3052630A successfully refreshed from Google Patents.
US3052630A
Expired / Lapsed
US
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Lubricating oil compositions
Assignee: Shell USA Inc
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Filing: 1960-04-18
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Granted: 1962-09-04
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Expires: 1980-04-18
Abstract
No abstract record available.
Inventors
- 👤 William S Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:36
CPC Classifications
C; C10; C10M; C10M161/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN IMPROVED MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO 10% OF A COPOLYMER OF 2-METHYL5-VINYLPYRIDINE, AND A MIXTURE OF LAURYL METHACRYLATE, STEARYL METHACRYLATE AND METHYL METHACRYLATE, THE SAID COPOLYMER HAVING THE VINYLPYRIDINE AND TOTAL ACRYLATE ESTERS IN A MOL RATIO OF ABOUT 1:10 TO 2:1, THE AMOUNT OF THE METHYL METHACRYLATE BEING 10 TO 45 MOL PERCENT OF THE TOTAL ACRYLATE ESTERS, AND THE COPOLYMER HAVING A MOLECULAR WEIGHT VARYING FROM ABOUT 100,000 TO 2.000, 000 AS DETERMINED BY THE LIGHT SCATTERING METHOD; AND FROM ABOUT 01% TO ABOUT 5% OF OIL-SOLUBLE CHROMIUM C8-3 ALKYL SALICYLATE.
Claim 2
Dependent Claim
106 words
AN IMPROVED MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO 10% OF A COPOLYMER OF 2-METHYL5-VINYLPYRIDINE, AND A MIXTURE OF LAURYL METHACRYLATE, STEARYL METHACRYLATE AND METHYL METHACRYLATE, THE SAID COPOLYMER HAVING THE VINYLPYRIDINE AND TOTAL ACRYLATE ESTERS IN A MOL RATIO OF ABOUT 1:10 TO 2:1, THE AMOUNT OF THE METHYL METHACRYLATE BEING 10 TO 45 MOL PERCENT OF THE TOTAL ACRYLATE ESTERS, AND THE COPOLYMER HAVING A MOLECULAR WEIGHT VARYING FROM ABOUT 100,000 TO 2.000, 000 AS DETERMINED BY THE LIGHT SCATTERING METHOD; AND FROM ABOUT 01% TO ABOUT 5% OF OIL-SOLUBLE CHROMIUM C8-3 ALKYL SALICYLATE.
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |