US2599343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature lubricating grease manufacture
Assignee: Standard Oil Development Co
•
Filing: 1950-02-08
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Granted: 1952-06-03
•
Expires: 1970-02-08
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
- 👤 John J Kolfenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:25
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/124; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/108; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE PROCESS OF PREPARING A LUBRICATING GREASE WHICH COMPRISES MIXING ABOUT 1 TO 5 PARTS BY WEIGHT OF A SAPONIFIABLE FATTY ACID HAVING BETWEEN ABOUT 12 AND 22 CARBON ATOMS WITH ABOUT 3 TO 10 PARTS OF A MINERAL BASE LUBRICATING OIL, ADDING A STRONG METAL BASE IN EXCESS TO SAPONIFY SAID FATTY ACID, ADDING ABOUT ONE-FOURTH TO 2 PARTS OF AN ALDEHYDE OF MOLECULAR WEIGHT LESS THAN C12 FATTY ACIDS AND CAPABLE OF UNDERGOING THE CANNIZZARO REACTION IN THE PRESENCE OF SAID BASE TO FORM THE CORRESPONDING SALT IN THE PRESENCE OF SAID LUBRICATING OIL AND SAPONIFIED FATTY ACID, HEATING TO ABOVE 210*F. BUT NOT ABOVE ABOUT 340*F. WITH MIXING TO REMOVE WATER AND TO SUBSTANTIALLY EVAPORATE ALCOHOL RELEASED IN SAID CANNIZZARO REACTION, AND FURTHER COOKING AND BLENDING IN ADDITIONAL LUBRICATING OIL TO FORM A GREASE OF THE DESIRED CONSISTENCY.
Claim 2
Dependent Claim
141 words
THE PROCESS OF PREPARING A LUBRICATING GREASE WHICH COMPRISES MIXING ABOUT 1 TO 5 PARTS BY WEIGHT OF A SAPONIFIABLE FATTY ACID HAVING BETWEEN ABOUT 12 AND 22 CARBON ATOMS WITH ABOUT 3 TO 10 PARTS OF A MINERAL BASE LUBRICATING OIL, ADDING A STRONG METAL BASE IN EXCESS TO SAPONIFY SAID FATTY ACID, ADDING ABOUT ONE-FOURTH TO 2 PARTS OF AN ALDEHYDE OF MOLECULAR WEIGHT LESS THAN C12 FATTY ACIDS AND CAPABLE OF UNDERGOING THE CANNIZZARO REACTION IN THE PRESENCE OF SAID BASE TO FORM THE CORRESPONDING SALT IN THE PRESENCE OF SAID LUBRICATING OIL AND SAPONIFIED FATTY ACID, HEATING TO ABOVE 210*F. BUT NOT ABOVE ABOUT 340*F. WITH MIXING TO REMOVE WATER AND TO SUBSTANTIALLY EVAPORATE ALCOHOL RELEASED IN SAID CANNIZZARO REACTION, AND FURTHER COOKING AND BLENDING IN ADDITIONAL LUBRICATING OIL TO FORM A GREASE OF THE DESIRED CONSISTENCY.
References Cited (Backward Citations)
US2516136A
Cited
US2516137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |