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US3697429A
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Lubricant containing low ethylene content and high ethylene content ethylene-alpha-olefin copolymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-06-02
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Granted: 1972-10-10
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Expires: 1990-06-02
Abstract
Abstract A LUBRICATING OIL COMPOSITION COMPRISING A LUBRICATING OIL AND A VISCOSITY INDEX IMPROVING AMOUNT OF AN OILSOLUBLE POLYMER COMPOSITION COMPRISING A FIRST COPOLYMER OF ETHYLENE AND A C3 TO C18 HIGHER ALPHA-OLEFIN HAVING AN ETHYLENE CONTENT OF 50-95 MOLE PERCENT (40-83 WT. PERCENT), AND A SECOND COPOLYMER OF ETHYLENE AND A C3 TO 18 HIGHER ALPHA-OLEFIN HAVING AN ETHYLENE CONTENT OF 5-80 MOLE PERCENT (3-70 WT. PERCENT), THE ETHYLENE CONTENT OF THE FIRST COPOLYMER BEING AT LEAST 5 MOLE PERCENT (4 WT. PERCENT) MORE THAN THE ETHYLENE CONTENT OF THE SECOND POLYMER.
Inventors
- 👤 Lawrence J Engel
- 👤 Marvin F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:51
CPC Classifications
C; C10; C10M; C10M157/00; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C10M143/00; C10M143/02; C08L2203/00; C08L2203/40; C08L2205/00; C08L2205/02; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/04; C10M2205/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/12; C10M2223/121; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2020/00; C10N2020/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |