US2619459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Union Oil Company of California
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Filing: 1949-03-03
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Granted: 1952-11-25
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Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 Loren L Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:14
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2209/00; C10M2209/10; C10M2209/101; C10M2221/00; C10M2221/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A LUBRICATING OIL ADDITIVE ADAPTED TO BE DILUTED WITH MINERAL LUBRICATING OIL TO PRODUCE A LUBRICATING OIL HAVING DETERGENT AND ANTI-CORROSIN CHARACTERISTICS, SAID ADDITIVE COMPRISING A SOLUTION OF MINERAL LUBRICATING OIL AND AN OILSOLUBLE METAL SALT OF THE ACIDIC REACTION PRODUCT OBTAINED BY CONDENSING, IN MINERAL LUBRICATING OIL SOLUTION, A MIXTURE OF PETROLEUM SULFONIC ACIDS AND A HYDROCARBON SUBSTITUTED PHENOL HAVING AT LEAST 1 HYDROCARBON SUBSTITUENT OF AT LEAST 3 CARBON ATOMS, IN WHICH THE RATIO OF MOLS OF SULFONIC ACIDS TO MOLS OF PHENOL IS BETWEEN ABOUT 0.05 AND 3 TO 1, AND WHICH SOLUTION CONTAINS A VOLUME OF OIL AT LEAST EQUAL TO THE VOLUME OF SULFONIC ACIDS PRESENT, WITH BETWEEN ABOUT 1.25 AND 2 EQUIVALENTS OF A LOW MOLECULAR WEIGHT ALDEHYDE CONTAINING FROM 1 TO 5 CARBON ATOMS PER MOLECULE, SAID CONDENSING BEING EFFECT BY HEATING TO A TEMPERATURE BETWEEN 150* F. AND 300* F.
Claim 2
Dependent Claim
148 words
A LUBRICATING OIL ADDITIVE ADAPTED TO BE DILUTED WITH MINERAL LUBRICATING OIL TO PRODUCE A LUBRICATING OIL HAVING DETERGENT AND ANTI-CORROSIN CHARACTERISTICS, SAID ADDITIVE COMPRISING A SOLUTION OF MINERAL LUBRICATING OIL AND AN OILSOLUBLE METAL SALT OF THE ACIDIC REACTION PRODUCT OBTAINED BY CONDENSING, IN MINERAL LUBRICATING OIL SOLUTION, A MIXTURE OF PETROLEUM SULFONIC ACIDS AND A HYDROCARBON SUBSTITUTED PHENOL HAVING AT LEAST 1 HYDROCARBON SUBSTITUENT OF AT LEAST 3 CARBON ATOMS, IN WHICH THE RATIO OF MOLS OF SULFONIC ACIDS TO MOLS OF PHENOL IS BETWEEN ABOUT 0.05 AND 3 TO 1, AND WHICH SOLUTION CONTAINS A VOLUME OF OIL AT LEAST EQUAL TO THE VOLUME OF SULFONIC ACIDS PRESENT, WITH BETWEEN ABOUT 1.25 AND 2 EQUIVALENTS OF A LOW MOLECULAR WEIGHT ALDEHYDE CONTAINING FROM 1 TO 5 CARBON ATOMS PER MOLECULE, SAID CONDENSING BEING EFFECT BY HEATING TO A TEMPERATURE BETWEEN 150* F. AND 300* F.
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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |