US3775322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricating additive
Assignee: Chevron USA Inc
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Filing: 1971-12-20
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Granted: 1973-11-27
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Expires: 1991-12-20
Abstract
Abstract COMPOSITIONS COMPRISING A CLASS OF SULFIDIZED-PHOSPHOSULFIDIZED ESTERS IMPART EXTREME PRESSURE AND ANTI-WEAR PROPERTIES TO LUBRICATING OILS.
Inventors
- 👤 B Hotten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:20
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |