Patent US2831811A successfully refreshed from Google Patents.
US2831811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of anhydrous calcium grease
Assignee: Sinclair Refining Co
•
Filing: 1954-07-08
•
Granted: 1958-04-22
•
Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 Martin M Mccormick
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:28
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN THE PREPARATION OF ANHYDROUS CALCIUM GREASE COMPOSITIONS WHEREIN A MINERAL LUBRICATING OIL IS THICKENED TO GREASE CONSISTENCY WITH A CALCIUM HYDROXY STEARATE, THE STEPS OF FORMING A HETEOGENEROUS MIXTURE, AT A TEMPERATURE FROM ABOUT ROOM TEMPERATURE TO 110*F., TO HYDROXY STEARIC ACID, LIME TO SAPONIFY THE FATTY COMPONENT AND FORM A SOAP, ABOUT 0.2 TO 2.0 PARTS BY WEIGHT OF WATER BASED ON THE FATTY COMPONENT AND ABOUT 2 TO 4 PARTS BY WEIGHT OF A MINERAL LUBRICATING OIL BASED ON THE FATTY COMPONENT, HEATING THE MIXTURE TO PROVIDE A THICKENING OF THE OIL AT ABOUT 120*F, T 145*F. AND AN INITIAL FORMATION OF SOAP BELOW THE MELTING POINT OF THE ACID, RAISING THE TEMPERATURE TO ABOUT 190*F. WHILE THE SAPONIFICATION GOES TO SUBSTANTIAL COMPLETION, EVAPORATING FREE WATER FROM THE MASS, ADDING FROM BOUT 3 PARTS TO THE TOTAL AMOUNT OF THE REMAINDER OF THE OIL OF THE FINAL COMPOSITION AND THEN DEHYDRATING THE GREASE AT A MAXIMUM TEMPERATURE OF BELOW ABOUT 260*F.
Claim 2
Dependent Claim
164 words
IN THE PREPARATION OF ANHYDROUS CALCIUM GREASE COMPOSITIONS WHEREIN A MINERAL LUBRICATING OIL IS THICKENED TO GREASE CONSISTENCY WITH A CALCIUM HYDROXY STEARATE, THE STEPS OF FORMING A HETEOGENEROUS MIXTURE, AT A TEMPERATURE FROM ABOUT ROOM TEMPERATURE TO 110*F., TO HYDROXY STEARIC ACID, LIME TO SAPONIFY THE FATTY COMPONENT AND FORM A SOAP, ABOUT 0.2 TO 2.0 PARTS BY WEIGHT OF WATER BASED ON THE FATTY COMPONENT AND ABOUT 2 TO 4 PARTS BY WEIGHT OF A MINERAL LUBRICATING OIL BASED ON THE FATTY COMPONENT, HEATING THE MIXTURE TO PROVIDE A THICKENING OF THE OIL AT ABOUT 120*F, T 145*F. AND AN INITIAL FORMATION OF SOAP BELOW THE MELTING POINT OF THE ACID, RAISING THE TEMPERATURE TO ABOUT 190*F. WHILE THE SAPONIFICATION GOES TO SUBSTANTIAL COMPLETION, EVAPORATING FREE WATER FROM THE MASS, ADDING FROM BOUT 3 PARTS TO THE TOTAL AMOUNT OF THE REMAINDER OF THE OIL OF THE FINAL COMPOSITION AND THEN DEHYDRATING THE GREASE AT A MAXIMUM TEMPERATURE OF BELOW ABOUT 260*F.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |