US2736701A
Expired / Lapsed
US
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Lubricating oil composition
Assignee: Union Oil Company of California
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Filing: 1952-04-22
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Granted: 1956-02-28
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Loren L Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:01
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M159/00; C10M159/12; C10M159/20; C10M159/22; C10M2203/00; C10M2205/00; C10M2205/16; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/09; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/20; C10M2209/00; C10M2209/10; C10M2209/101; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/14; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2060/00; C10N2060/04; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A LUBRICATING OIL ADDITIVE CONCENTRATE ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL WHICH COMPRISES A MINERAL OIL SOLUTION CONTAINING 15% TO 50% OF AN OILSOLUBLE COMPLEX OBTAINED BY HEATING AN OIL SOLUTION OF AN OIL-SOLUBLE METAL SALT OF A HYDROCARBON SUBSTITUTED PHENOL-ALDEHYDE RESIN, IN WHICH THE ALDEHYDE HAS NOT MORE THAN 5 CARBON ATOMS PER MOLECULE, TO A TEMPERATURE BETWEEN ABOUT 325* F. AND ABOUT 400* F., ADDING TO THE HEATED SOLUTION AN AQUEOUS MIXTURE OF AT LEAST ONE BASICALLY REACTING METAL INORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HYDROXIDES, CARBONATES AND BICARBONATES OF BARIUM, STRONTIUM, SODIUM, POTASSIUM AND LITHIUM, SAID MIXTURE CONTAINING BETWEEN ABOUT 25% AND ABOUT 90% BY WEIGHT OF SAID COMPOUND AND BEING ADDED AT A RATE SUCH THAT THE ADDITION TAKES PLACE OVER A PERIOD OF AT LEAST ABOUT 30 MINUTES AND CONTINUING THE HEATING FOR A TIME SUFFICIENT TO VOLATILIZE WATER THEREBY SOLUBILIZING BETWEEN ABOUT 0.1 AND ABOUT 3 EQUIVALENTS OF SAID BASICALLY REACTING METAL INORGANIC COMPOUND PER EQUIVALENT OF PHENOL-ALDEHYDE RESIN SALT IN THE OIL SOLUTION OF SAID RESIN SALT.
Claim 2
Dependent Claim
178 words
A LUBRICATING OIL ADDITIVE CONCENTRATE ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL WHICH COMPRISES A MINERAL OIL SOLUTION CONTAINING 15% TO 50% OF AN OILSOLUBLE COMPLEX OBTAINED BY HEATING AN OIL SOLUTION OF AN OIL-SOLUBLE METAL SALT OF A HYDROCARBON SUBSTITUTED PHENOL-ALDEHYDE RESIN, IN WHICH THE ALDEHYDE HAS NOT MORE THAN 5 CARBON ATOMS PER MOLECULE, TO A TEMPERATURE BETWEEN ABOUT 325* F. AND ABOUT 400* F., ADDING TO THE HEATED SOLUTION AN AQUEOUS MIXTURE OF AT LEAST ONE BASICALLY REACTING METAL INORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HYDROXIDES, CARBONATES AND BICARBONATES OF BARIUM, STRONTIUM, SODIUM, POTASSIUM AND LITHIUM, SAID MIXTURE CONTAINING BETWEEN ABOUT 25% AND ABOUT 90% BY WEIGHT OF SAID COMPOUND AND BEING ADDED AT A RATE SUCH THAT THE ADDITION TAKES PLACE OVER A PERIOD OF AT LEAST ABOUT 30 MINUTES AND CONTINUING THE HEATING FOR A TIME SUFFICIENT TO VOLATILIZE WATER THEREBY SOLUBILIZING BETWEEN ABOUT 0.1 AND ABOUT 3 EQUIVALENTS OF SAID BASICALLY REACTING METAL INORGANIC COMPOUND PER EQUIVALENT OF PHENOL-ALDEHYDE RESIN SALT IN THE OIL SOLUTION OF SAID RESIN SALT.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |