US3304260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of improved viscosity index containing alkyl polymethacrylate of high relative syndiotacticity
Assignee: Monsanto Co
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Filing: 1965-07-28
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Granted: 1967-02-14
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Expires: 1985-07-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Fields
- 👤 Edward H Mottus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:23
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M149/00; C10M149/02; C10M149/10; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/06; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A MINERAL OIL COMPOSITION HAVING HIGH VISCOSITY INDEX CHARACTERISTICS AND DISPERSANT PROPERTIES COMPRISING A MAJOR AMOUNT OF MINERAL OIL AND AT LEAST 0.1% BY WEIGHT BASED ON SAID OIL OF AN OIL-SOLUBLE POLYMER HAVING A RELATIVE SYNDIOTACTICITY OF AT LEAST 87 COMPRISING A MAJOR AMOUNT OF MIXTURE OF C10-C18 STRAIGHT-CHAIN ALKYL METHACRYLATES, A MINOR AMOUNT OF METHYL METHACRYLATE AND A MINOR AMOUNT OF N-VINYL-2-PYRROLIDONE.
Claim 2
Dependent Claim
64 words
A MINERAL OIL COMPOSITION HAVING HIGH VISCOSITY INDEX CHARACTERISTICS AND DISPERSANT PROPERTIES COMPRISING A MAJOR AMOUNT OF MINERAL OIL AND AT LEAST 0.1% BY WEIGHT BASED ON SAID OIL OF AN OIL-SOLUBLE POLYMER HAVING A RELATIVE SYNDIOTACTICITY OF AT LEAST 87 COMPRISING A MAJOR AMOUNT OF MIXTURE OF C10-C18 STRAIGHT-CHAIN ALKYL METHACRYLATES, A MINOR AMOUNT OF METHYL METHACRYLATE AND A MINOR AMOUNT OF N-VINYL-2-PYRROLIDONE.
References Cited (Backward Citations)
US2125885A
Cited
US3142664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |