US2623016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Union Oil Company of California
•
Filing: 1949-01-17
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Granted: 1952-12-23
•
Expires: 1969-01-17
Abstract
No abstract record available.
Inventors
- 👤 Richard W Mertes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/10; C10M2209/101; C10M2219/00; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/061; 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; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A MINERAL LUBRICATING OIL SUITABLE FOR USE IN INTERNAL COMBUSTION ENGINES CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPART DETERGENCY CHARACTERISTIC TO SAID OIL, OF A MODIFIED OILSOLUBLE METAL PETROLEUM SULFONATE FORMED BY HEATING AN OIL-SOLUBLE METAL PETROLEUM SULFONATE WITH A METAL SALT OF A WEAK INORGANIC ACID HAVING AN IONIZATION CONSTANT LESS THAN ABOUT 1X10-1, OTHER THAN METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES, AT A TEMPERATURE SUFFICIENT TO EFFECT DEHYDRATION AND TO SOLUBILIZE SAID WEAK ACID SALT IN THE SULFONATE.
Claim 2
Dependent Claim
80 words
A MINERAL LUBRICATING OIL SUITABLE FOR USE IN INTERNAL COMBUSTION ENGINES CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPART DETERGENCY CHARACTERISTIC TO SAID OIL, OF A MODIFIED OILSOLUBLE METAL PETROLEUM SULFONATE FORMED BY HEATING AN OIL-SOLUBLE METAL PETROLEUM SULFONATE WITH A METAL SALT OF A WEAK INORGANIC ACID HAVING AN IONIZATION CONSTANT LESS THAN ABOUT 1X10-1, OTHER THAN METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES, AT A TEMPERATURE SUFFICIENT TO EFFECT DEHYDRATION AND TO SOLUBILIZE SAID WEAK ACID SALT IN THE SULFONATE.
References Cited (Backward Citations)
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US2485861A
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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) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |