US2801220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lubricating greases from monohydric alcohol esters of hydroxy fatty acids
Assignee: Baker Castor Oil Co
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Filing: 1954-07-06
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Granted: 1957-07-30
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Smith Malcolm Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/16; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/04; C10M2219/044; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE MANUFACTURE OF LUBRICATING GREASES, THE METHOD WHICH COMPRISES HEATING ABOUT STOICHIOMETRIC PROPORTIONS OF A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES, OXIDES, AND CARBONATES OF ALKALI METALS, ALKALINE EARTH METALS, AND ALUMINUM TOGETHER WITH AN ESTER OF AN ALIPHATIC MONOHYDRIC ALCOHOL HAVING FROM 1 TO 5 CARBON ATOMS AND A HYDROXY FATTY ACID HAVING FROM 9 TO 24 CARBON ATOMS IN AN UNSAPONIFIABLE LUBRICANT BASE TO A SOAP-FORMING TEMPERATURE, SAID METAL COMPOUND AND SAID ESTER BEING IN SUFFICIENT AMOUNT SO THAT THE RESULTING SOAP IMPARTS A GREASE CONSISTENCY TO THE LUBRICANT BASE, AND THEN HEATING THE MIXTURE TO A HIGHER TEMPERATURE SUFFICIENT TO FORM A GREASE UPON SUBSEQUENT COOLING.
Claim 2
Dependent Claim
113 words
IN THE MANUFACTURE OF LUBRICATING GREASES, THE METHOD WHICH COMPRISES HEATING ABOUT STOICHIOMETRIC PROPORTIONS OF A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES, OXIDES, AND CARBONATES OF ALKALI METALS, ALKALINE EARTH METALS, AND ALUMINUM TOGETHER WITH AN ESTER OF AN ALIPHATIC MONOHYDRIC ALCOHOL HAVING FROM 1 TO 5 CARBON ATOMS AND A HYDROXY FATTY ACID HAVING FROM 9 TO 24 CARBON ATOMS IN AN UNSAPONIFIABLE LUBRICANT BASE TO A SOAP-FORMING TEMPERATURE, SAID METAL COMPOUND AND SAID ESTER BEING IN SUFFICIENT AMOUNT SO THAT THE RESULTING SOAP IMPARTS A GREASE CONSISTENCY TO THE LUBRICANT BASE, AND THEN HEATING THE MIXTURE TO A HIGHER TEMPERATURE SUFFICIENT TO FORM A GREASE UPON SUBSEQUENT COOLING.
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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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |