US3634239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Shell USA Inc
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Filing: 1969-09-08
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Granted: 1972-01-11
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Expires: 1989-09-08
Abstract
Abstract SYNTHETIC ESTER LUBRICATING OIL COMPOSITIONS CONTAINING MINOR AMOUNTS OF (1) A TRIHYDROCARBYL PHOSPHATE, (2) AN ALKYL AMINE SALT OF A MONOHALKYLPHOSPHONIC ACID AND (3) A DICARBOXYLIC ACID HAVE IMPORVED ANTICORRROSION, ANTIOXIDATION AND LOAD-CARRYING PROPERTIES.
Inventors
- 👤 Alexander C B Macphail
- 👤 John E Lauck
- 👤 Kenneth T Wendler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:47
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/109; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/06; C10M2223/063; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |