Patent US766066A successfully refreshed from Google Patents.
Patent US3136725A successfully refreshed from Google Patents.
US3136725A
Expired / Lapsed
US
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Calcium alkenyl succinate grease making
Assignee: Sinclair Research Inc
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Filing: 1958-09-18
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Granted: 1964-06-09
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Expires: 1978-09-18
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:17
CPC Classifications
C; C10; C10M; C10M5/00; C10M7/00; C10M2207/00; C10M2207/04; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/34; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PROCESS FOR MAKING GREASE CONTAINING A LIQUID OLEGINOUS LUBRICATING BASE AND ABOUT 2.5 TO 50% OF A CALCIUM ALKENYL SUCCINATE AS THE ESSENTIAL THICKENING CONSTITUENT WHICH COMPRISES NETURALIZING A HYDROLYZED ANHYDRIDE MIXTURE AT A TEMPERATURE OF UP TO ABOUT 130*F. BY ADDITION OF A CALCIUM COMPONENT IN THE PRESENCE OF AN AMOUNT OF WATER AT LEAST ABOUT EQUAL TO THE WEIGHT OF THE ANHYDRIDE AND A QUANTITY OF OLEGINOUS LUBRICATING BASE AT LEAST ABOUT THREE TIMES THE WEIGHT OF THE ANHYDRIDE, REMOVING FREE WATER FROM THE MIXTURE, REMOVING COMBINED WATER FROM THE MIXTURE AND ADDING ANY OLEAGINOUS BASE NEEDED TO GIVE THE DESIRED SOAP CONTENT IN THE GREASE, SAID HYDRLYZED ANHYDRIDE MIXTURE BEING THE RESULT OF HYDROLYZING AN ALKENYL SUCCINIC ANHYDRIDE OF 8 TO 39 CARBON ATOMS WITH WATER IN THE PRESENCE OF ABOUT 0.5 TO 10% BY WEIGHT OF THE ANHYDRIDE OF AN ACID HAVING A DISSOCIATION CONSTANT OF AT LEAST ABOT 1X10**-5.
Claim 2
Dependent Claim
155 words
A PROCESS FOR MAKING GREASE CONTAINING A LIQUID OLEGINOUS LUBRICATING BASE AND ABOUT 2.5 TO 50% OF A CALCIUM ALKENYL SUCCINATE AS THE ESSENTIAL THICKENING CONSTITUENT WHICH COMPRISES NETURALIZING A HYDROLYZED ANHYDRIDE MIXTURE AT A TEMPERATURE OF UP TO ABOUT 130*F. BY ADDITION OF A CALCIUM COMPONENT IN THE PRESENCE OF AN AMOUNT OF WATER AT LEAST ABOUT EQUAL TO THE WEIGHT OF THE ANHYDRIDE AND A QUANTITY OF OLEGINOUS LUBRICATING BASE AT LEAST ABOUT THREE TIMES THE WEIGHT OF THE ANHYDRIDE, REMOVING FREE WATER FROM THE MIXTURE, REMOVING COMBINED WATER FROM THE MIXTURE AND ADDING ANY OLEAGINOUS BASE NEEDED TO GIVE THE DESIRED SOAP CONTENT IN THE GREASE, SAID HYDRLYZED ANHYDRIDE MIXTURE BEING THE RESULT OF HYDROLYZING AN ALKENYL SUCCINIC ANHYDRIDE OF 8 TO 39 CARBON ATOMS WITH WATER IN THE PRESENCE OF ABOUT 0.5 TO 10% BY WEIGHT OF THE ANHYDRIDE OF AN ACID HAVING A DISSOCIATION CONSTANT OF AT LEAST ABOT 1X10**-5.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |