US3687849A
Expired / Lapsed
US
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Lubricants containing oil-soluble graft polymers derived from degraded ethylene-propylene interpolymers
Assignee: Lubrizol Corp
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Filing: 1971-01-18
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Granted: 1972-08-29
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Expires: 1991-01-18
Abstract
Abstract GRAFT POLYMERS ARE PREPARED FROM VARIOUS POLYMERIZABLE UNSATURATED MONOMERS AND AN OXIDIZED, DEGRADED INTERPOLYMER OF ETHYLENE AND PROPYLENE. THESE POLYMERS ARE USEFUL AS VISCOSITY INDEX IMPROVES, DISPERSANTS AND POUR POINT DEPRESSANTS FOR FUELS AND LUBRICANTS.
Inventors
- 👤 Franklin Paul Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/18; C08; C08F; C08F255/00; C08F255/02; C08F255/023; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10M143/02; C10L1/18; C10L1/192; C10L1/195; C10L1/22; C10L1/234; C10L1/236; C10L1/24; C10L1/2462; C10L1/2468; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/086; C10M2209/10; C10M2211/00; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/04; C10M2213/06; C10M2213/062; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/25; C10N2040/255; C10N2040/26
Claims Analysis
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |