US3681242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage preparation of high dropping point lithium soap grease
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-01-28
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Granted: 1972-08-01
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Expires: 1991-01-28
Abstract
Abstract A HIGH TEMPERATURE MULTIPURPOSE GREASE IS PREPARED FROM THE LITHIUM SOAP OF A C12 TO C24 HYDROXY FATTY ACID, E.G. 12-HYDROXY STEARIC ACID, AND A DILITHIUM SOAP OF A C4 TO C12 DICARBOXYLIC ACID, E.G. DILITHIUM AZELATE. A RIGOROUS CONTROL OF PROCESSING CONDITIONS, INCLUDING TWO STAGES OF HEATING, RESULTS IN A GOOD YIELD OF GREASE OF HIGH DROPPING POINT.
Inventors
- 👤 Syed S H Gilani
- 👤 Donald W Murray
- 👤 Juan M Salva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
C; C10; C10M; C10M5/00; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2209/111; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |