US3766069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricating oil additives
Assignee: Chevron USA Inc
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Filing: 1971-07-26
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Granted: 1973-10-16
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Expires: 1991-07-26
Abstract
Abstract LUBRICATING OIL ADDITIVES COMPRISING A CLASS OF SULFURIZED HYDROXYESTERS ARE PROVIDED, WHICH HAVE THE PROPERTIES OF EXTREME PRESSURE LUBRICATION, STABILITY AND NONCORROSIVITY TOWARDS COPPER. THE HYDROXYESTERS ARE THE PRODUCT OF THE REACTION OF AN EPOXIDE WITH A FATTY ACID OR A DEROSINIFIELD TALL OIL.
Inventors
- 👤 B Hotten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:45
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/06; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/16; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2219/00; C10M2219/02; C10M2219/024; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2050/00; C10N2050/10
Claims Analysis
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |