US2501731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified lubricating oil
Assignee: Union Oil Company of California
•
Filing: 1946-10-14
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Granted: 1950-03-28
•
Expires: 1966-10-14
Abstract
No abstract record available.
Inventors
- 👤 Richard W Mertes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:49
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; 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; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/063; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/09; 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
101 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR BUT EFFECTIVE PROPORTION OF ABOUT 0.2% TO 3.0% OF A COMPLEX FORMED BY HEATING AN OIL-SOLUBLE METAL PETROLEUM SULFONATE WITH AN AMOUNT OF AN INORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES TOGETHER WITH MINERAL OIL AND A TEMPERATURE OF ABOUT 350*F. TO 450*F., SUFFICIENT TO TAKE UP ABOUT 5% TO 45% BASED ON THE SULFONATE OF THE INORGANIC BASE IN SAID COMPLEX, TO SOLUBILIZE SAID COMPLEX IN THE OIL AND DEHYDRATE THE PRODUCT, SAID INORGANIC BASE HAVING THE FUNCTION OF ENHANCING THE DETERGENT CAPACITY OF THE SULFONATE.
Claim 2
Dependent Claim
101 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR BUT EFFECTIVE PROPORTION OF ABOUT 0.2% TO 3.0% OF A COMPLEX FORMED BY HEATING AN OIL-SOLUBLE METAL PETROLEUM SULFONATE WITH AN AMOUNT OF AN INORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES TOGETHER WITH MINERAL OIL AND A TEMPERATURE OF ABOUT 350*F. TO 450*F., SUFFICIENT TO TAKE UP ABOUT 5% TO 45% BASED ON THE SULFONATE OF THE INORGANIC BASE IN SAID COMPLEX, TO SOLUBILIZE SAID COMPLEX IN THE OIL AND DEHYDRATE THE PRODUCT, SAID INORGANIC BASE HAVING THE FUNCTION OF ENHANCING THE DETERGENT CAPACITY OF THE SULFONATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |