US2789950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Gulf Oil Corp
•
Filing: 1954-08-19
•
Granted: 1957-04-23
•
Expires: 1974-08-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph I Gottshall
- 👤 John G Peters
- 👤 Howard W Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/28; C10M2207/287; C10M2207/288; C10M2207/289; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/135; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
AN IMPROVED LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND MINOR PROPORTIONS CONSISTING OF ABOUT 0.1 TO ABOUT 5.0 PERCENT BY WEIGHT OF AN ALKYL PHENOL, SAID ALKYL PHENOL CONTAINING AT LEAST ONE ALKYL GROUP CONTAINING BETWEEN 3 AND 12 CARBON ATOMS, ABOUT 0.0001 TO ABOUT 1.0 PERCENT BY WEIGHT OF A SUBSTANTIALLY NEUTRAL ADDITION PRODUCT OF 3-METHYLBUTYL,2-ETHYLHEXYL ACID ORTHOPHOSPHATE AND A PRIMARY FATTY AMINE, SAID AMINE BEING A MONO-ALKYL AMINE CONTAINING FROM 8 TO 18 CARBON ATOMS, AND AN ACID ESTER OF (1) A DIMERIC ACID DERIVED FROM AN UNSATURATED FATTY ACID CONTAINING FROM 6 TO 22 CARBON ATOMS AND HAVING FROM 2 TO 3 ETHYLENIC LINKAGE PER MOLECULE AND (2) A PARTIAL ESTER OF A FATTY ACID CONTAINING FROM 12 TO 24 CARBON ATOMS AND AN ALKITOL ANHYDRIDE, SAID ACID ESTER CONTAINING AT LEAST ONE UNREACTED CARBOXYL GROUP PER MOLECULE AND WHEREIN SAID ACID ESTER IS PRESENT IN AN AMOUNT SUFFICIENT TO IMPROVE THE FILM TENACITY CHARACTEISTIC OF THE COMPOSITION.
Claim 2
Dependent Claim
168 words
AN IMPROVED LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND MINOR PROPORTIONS CONSISTING OF ABOUT 0.1 TO ABOUT 5.0 PERCENT BY WEIGHT OF AN ALKYL PHENOL, SAID ALKYL PHENOL CONTAINING AT LEAST ONE ALKYL GROUP CONTAINING BETWEEN 3 AND 12 CARBON ATOMS, ABOUT 0.0001 TO ABOUT 1.0 PERCENT BY WEIGHT OF A SUBSTANTIALLY NEUTRAL ADDITION PRODUCT OF 3-METHYLBUTYL,2-ETHYLHEXYL ACID ORTHOPHOSPHATE AND A PRIMARY FATTY AMINE, SAID AMINE BEING A MONO-ALKYL AMINE CONTAINING FROM 8 TO 18 CARBON ATOMS, AND AN ACID ESTER OF (1) A DIMERIC ACID DERIVED FROM AN UNSATURATED FATTY ACID CONTAINING FROM 6 TO 22 CARBON ATOMS AND HAVING FROM 2 TO 3 ETHYLENIC LINKAGE PER MOLECULE AND (2) A PARTIAL ESTER OF A FATTY ACID CONTAINING FROM 12 TO 24 CARBON ATOMS AND AN ALKITOL ANHYDRIDE, SAID ACID ESTER CONTAINING AT LEAST ONE UNREACTED CARBOXYL GROUP PER MOLECULE AND WHEREIN SAID ACID ESTER IS PRESENT IN AN AMOUNT SUFFICIENT TO IMPROVE THE FILM TENACITY CHARACTEISTIC OF THE COMPOSITION.
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |