US3711407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incorporating lithium salicylate or the like into a grease
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-11-18
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Granted: 1973-01-16
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Expires: 1990-11-18
Abstract
Abstract AN ALKALI METAL SALT AND PARTICULARLY A LITHIUM SALT OF SALICYLIC ACID OR RELATED HYDROXY BENZOIC ACID IS INCORPORATED INTO A LUBRICATING OIL OR GREASE AS AN ANTIOXIDANT BY SPONIFYING AN ALIPHATIC ALCOHOL ESTER OF THE HYDROXY BENZOIC ACID AND THEN REMOVING THE WATER AND ALCOHOL FORMED IN THE REACTION. IMPROVEMENTS OVER PRIOR ART METHODS INCLUDE BETTER PARTICLE SIZE DISTRIBUTION AND LOWER COST.
Inventors
- 👤 R Plumstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:14
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/10; C10M2201/102; C10M2201/103; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/124; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/144; C10M2207/146; C10N; C10N2010/00; C10N2010/02; C10N2010/04; 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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |