US2833715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Standard Oil Co
•
Filing: 1955-09-29
•
Granted: 1958-05-06
•
Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lemmon
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:55
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/04; C10M2223/00; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A LUBRICATING OIL COMPOSITION HAVING IMPROVED VALVE LIFTER ANTI-PITTING AND ANTI-WEAR PROPERTIES COMPRISING A MAJOR PROPORTION OF A LUBRICATING MINERAL OIL BASE, BETWEEN ABOUT 0.002 AND 10% OF A PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT WHICH HAS BEEN NEUTRALIZED WITH A BASIC REAGENT, AND BETWEEN ABOUT 0.001 AND 5% OF AN AMINE SALT OF THE POLYMERIZATION PRODUCTS OF THOSE UNSATURATED FATTY ACIDS WHICH HAVE BETWEEN 16 AND 26 CARBON ATOMS PER MOLECULE, SAID AMINE BEING AN OIL SOLUBLE ALIPHATIC MONO-AMINE, AND SAID POLYMERIZATION PRODUCTS HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 400 AND 2000.
Claim 2
Dependent Claim
91 words
A LUBRICATING OIL COMPOSITION HAVING IMPROVED VALVE LIFTER ANTI-PITTING AND ANTI-WEAR PROPERTIES COMPRISING A MAJOR PROPORTION OF A LUBRICATING MINERAL OIL BASE, BETWEEN ABOUT 0.002 AND 10% OF A PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT WHICH HAS BEEN NEUTRALIZED WITH A BASIC REAGENT, AND BETWEEN ABOUT 0.001 AND 5% OF AN AMINE SALT OF THE POLYMERIZATION PRODUCTS OF THOSE UNSATURATED FATTY ACIDS WHICH HAVE BETWEEN 16 AND 26 CARBON ATOMS PER MOLECULE, SAID AMINE BEING AN OIL SOLUBLE ALIPHATIC MONO-AMINE, AND SAID POLYMERIZATION PRODUCTS HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 400 AND 2000.
References Cited (Backward Citations)
US2316090A
Cited
US2624708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |