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US3752767A
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Lubricant composition
Assignee: Shell USA Inc
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Filing: 1971-06-22
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Granted: 1973-08-14
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Expires: 1991-06-22
Abstract
Abstract LUBRICANT COMPOSITIONS COMPRISING HYDROGENATED RANDOM COPOLYMERS OF A CONJUGATED DIENE AND A VINYLAROMATIC COMPOUND AND A SUITABLE LUBRICATING OIL HAVE IMPROVED VISCOSITY PROPERTIES.
Inventors
- 👤 R Eckert
- 👤 J Heemskerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:01
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/12; C08; C08C; C08C19/00; C08C19/02; C08F; C08F8/00; C08F8/04; C10M2205/00; C10M2205/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; 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; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |