Patent US3238133A successfully refreshed from Google Patents.
US3238133A
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Lubricating oil compositions containing neutral ashless polymeric detergents
Assignee: Shell USA Inc
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Filing: 1962-07-30
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Granted: 1966-03-01
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Lyman E Lorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/024; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/084; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/10; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2040/00; C10N2040/25; C10N2040/252; C10N2040/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF A DETERGENTG-DISPERSANT OIL-SOLUBLE C30-50 ALKYL METHACRYLATE POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 50,000 TO ABOUT 2,000,000.
Claim 2
Dependent Claim
39 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF A DETERGENTG-DISPERSANT OIL-SOLUBLE C30-50 ALKYL METHACRYLATE POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 50,000 TO ABOUT 2,000,000.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |