Patent US3198736A successfully refreshed from Google Patents.
US3198736A
Expired / Lapsed
US
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Lubricating composition
Assignee: Shell USA Inc
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Filing: 1962-12-18
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Granted: 1965-08-03
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Bennett M Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:03
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408; C07D207/412; C08; C08F; C08F20/00; C08F20/02; C08F20/08; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/104; C10M2203/106; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/066; C10M2215/067; 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; C10M2219/02; C10M2219/022; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/086; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO ABOUT 15% OF AN OIL-SOLUBLE COPOLYMER OF C-VINYL PYRIDINE, AND A MIXTURE OF DISSIMILAR C12-18 ALKYL ACRYLATES, THE MOL RATIO OF C-VINYL PYRIDINE TO THE ACRYLATE ESTER MIXTURE BEING IN THE RATIO OF 1:1 TO 1:20, RESPECTIVELY, AND THE COPOLYMER HAVING A MOLECULAR WEIGHT RANGE OF FROM ABOUT 50,000 TO ABOUT 2,500,000 AND FROM ABOUT 0.1% TO ABOUT 5% EACH OF BIS (3,5-DITERBUTYL-4HYDROXYPHENYL) METHANE AND N,N''-BIS(DI-C1-8-ALKYLAMINOPHENYL) METHANE, AND FROM ABOUT 0.5% TO ABOUT 2% OF A REACTION PRODUCT OF P2S5 AND TERPENE.
Claim 2
Dependent Claim
99 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 1% TO ABOUT 15% OF AN OIL-SOLUBLE COPOLYMER OF C-VINYL PYRIDINE, AND A MIXTURE OF DISSIMILAR C12-18 ALKYL ACRYLATES, THE MOL RATIO OF C-VINYL PYRIDINE TO THE ACRYLATE ESTER MIXTURE BEING IN THE RATIO OF 1:1 TO 1:20, RESPECTIVELY, AND THE COPOLYMER HAVING A MOLECULAR WEIGHT RANGE OF FROM ABOUT 50,000 TO ABOUT 2,500,000 AND FROM ABOUT 0.1% TO ABOUT 5% EACH OF BIS (3,5-DITERBUTYL-4HYDROXYPHENYL) METHANE AND N,N''-BIS(DI-C1-8-ALKYLAMINOPHENYL) METHANE, AND FROM ABOUT 0.5% TO ABOUT 2% OF A REACTION PRODUCT OF P2S5 AND TERPENE.
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |