US2940931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing rheopectic calcium 12-hydroxy stearate grease
Assignee: Sinclair Refining Co
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Filing: 1956-07-20
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Granted: 1960-06-14
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:08
CPC Classifications
C; C10; C10M; C10M5/00; C10M2205/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/108; C10M2209/109; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A METHOD FOR PREPARING A SUBSTANTIALLY ANHYDROUS CALCIUM LUBRICANT COMPOSITION, THE STEPS WHICH COMPRISE FORMING CALCIUM 12-HYDROXY STEARATE SOAP IN THE PRESENCE OF WATER AND POUR DEPRESSED LUBRICATING OIL TO PROVIDE A MIXTURE HAVING A SOAP CONCENTRATION OF FROM ABOUT 16 TO 20% BY WEIGHT BASED ON THE SOAP AND OIL, DEHYDRATING SAID MIXTURE AT A TEMPERATURE BELOW ABOUT 260*F. TO EFFECT SUBSTANTIALLY COMPLETE DEHYDRATION, HEATING THE DEHYDRATED MIXTURE AT A TEMPERATURE OF FROM ABOUT 285 TO 295*F. UNTIL SUCH TIME AS THE ENTIRE MASS IS SOFT WITH A FLAT SURFACE, ADDING POUR DEPRESSED LUBRICATING OIL TO SAID COMPOSITION TO AFFORD A SOAP CONCENTRATION OF FROM ABOUT 2 TO 6% BY WEIGHT AND THEREAFTER DISPERSING SAID SOAP TO OBTAIN A LUBRICANT HAVING A CONSISTENCY OF FROM ABOUT 10 TO 50 SECONDS IN AN SIL MOBILOMETER USING A 40 GRAM WEIGHT.
Claim 2
Dependent Claim
141 words
IN A METHOD FOR PREPARING A SUBSTANTIALLY ANHYDROUS CALCIUM LUBRICANT COMPOSITION, THE STEPS WHICH COMPRISE FORMING CALCIUM 12-HYDROXY STEARATE SOAP IN THE PRESENCE OF WATER AND POUR DEPRESSED LUBRICATING OIL TO PROVIDE A MIXTURE HAVING A SOAP CONCENTRATION OF FROM ABOUT 16 TO 20% BY WEIGHT BASED ON THE SOAP AND OIL, DEHYDRATING SAID MIXTURE AT A TEMPERATURE BELOW ABOUT 260*F. TO EFFECT SUBSTANTIALLY COMPLETE DEHYDRATION, HEATING THE DEHYDRATED MIXTURE AT A TEMPERATURE OF FROM ABOUT 285 TO 295*F. UNTIL SUCH TIME AS THE ENTIRE MASS IS SOFT WITH A FLAT SURFACE, ADDING POUR DEPRESSED LUBRICATING OIL TO SAID COMPOSITION TO AFFORD A SOAP CONCENTRATION OF FROM ABOUT 2 TO 6% BY WEIGHT AND THEREAFTER DISPERSING SAID SOAP TO OBTAIN A LUBRICANT HAVING A CONSISTENCY OF FROM ABOUT 10 TO 50 SECONDS IN AN SIL MOBILOMETER USING A 40 GRAM WEIGHT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |