Patent US4429766A successfully refreshed from Google Patents.
Patent US2619460A successfully refreshed from Google Patents.
US2619460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Union Oil Company of California
•
Filing: 1949-03-26
•
Granted: 1952-11-25
•
Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 Loren L Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/02; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/25; C10N2040/252; C10N2040/253; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A COMPOSITION OF MATTER SUITABLE FOR ADDITION TO MINERAL LUBRICATING OIL TO IMPART DETERGENT AND ANTI-CORROSION PROPERTIES TO SAID OIL OF A COMPLEX PRODUCED BY HEATING A MIXTURE OF 1 MOL OF PHENOL, BETWEEN 0.05 AND 3 MOLS OF PETROLEUM SULFONIC ACIDS AND BETWEEN 1.25 AND 2 EQUIVALENTS OF A LOW MOLECULAR WEIGHT ALDEHYDE HAVING 1 TO 5 CARBON ATOMS TO A TEMPERATURE BETWEEN 150* F. AND 300* F., THERERBY PRODUCING AN OIL-SOLUBLE ACIDIC CONDENSATION PRODUCT, CONVERTING SAID ACIDIC CONDENSATION PRODUCT INTO ITS METAL SALT AND HEATING A MIXTURE OF SAID METAL SALT, WATER AND A BASICALLY REACTING METAL COMPOUND OF THE CLASS CONSISTING OF METAL OXIDES, METAL HYDROXIDES AND METAL SALTS OF WEAK ACIDS HAVING AN IONIZATION CONSTANT LESS THAN ABOUT 1X10-1, SAID LAST-NAMED METAL SALTS HAVING A BASIC REACTION AS INDICATED BY CHEMICAL INDICATORS, TO A TEMPERATURE BETWEEN 150* F. AND 500* F. FOR A TIME SUFFICIENT TO SOLUBILIZE SAID BASICALLY REACTING METAL COMPOUND, THE RATIO OF EQUIVALENTS OF BASICALLY REACTING METAL COMPOUND TO EQUIVALENTS OF METAL SALT OF SAID ACIDIC CONDENSATION PRODUCT BEING BETWEEN 0.1 AND 4 TO 1.
Claim 2
Dependent Claim
182 words
A COMPOSITION OF MATTER SUITABLE FOR ADDITION TO MINERAL LUBRICATING OIL TO IMPART DETERGENT AND ANTI-CORROSION PROPERTIES TO SAID OIL OF A COMPLEX PRODUCED BY HEATING A MIXTURE OF 1 MOL OF PHENOL, BETWEEN 0.05 AND 3 MOLS OF PETROLEUM SULFONIC ACIDS AND BETWEEN 1.25 AND 2 EQUIVALENTS OF A LOW MOLECULAR WEIGHT ALDEHYDE HAVING 1 TO 5 CARBON ATOMS TO A TEMPERATURE BETWEEN 150* F. AND 300* F., THERERBY PRODUCING AN OIL-SOLUBLE ACIDIC CONDENSATION PRODUCT, CONVERTING SAID ACIDIC CONDENSATION PRODUCT INTO ITS METAL SALT AND HEATING A MIXTURE OF SAID METAL SALT, WATER AND A BASICALLY REACTING METAL COMPOUND OF THE CLASS CONSISTING OF METAL OXIDES, METAL HYDROXIDES AND METAL SALTS OF WEAK ACIDS HAVING AN IONIZATION CONSTANT LESS THAN ABOUT 1X10-1, SAID LAST-NAMED METAL SALTS HAVING A BASIC REACTION AS INDICATED BY CHEMICAL INDICATORS, TO A TEMPERATURE BETWEEN 150* F. AND 500* F. FOR A TIME SUFFICIENT TO SOLUBILIZE SAID BASICALLY REACTING METAL COMPOUND, THE RATIO OF EQUIVALENTS OF BASICALLY REACTING METAL COMPOUND TO EQUIVALENTS OF METAL SALT OF SAID ACIDIC CONDENSATION PRODUCT BEING BETWEEN 0.1 AND 4 TO 1.
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 |