Patent US4293432A successfully refreshed from Google Patents.
US4293432A
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Lubricating oil composition
Assignee: Edwin Cooper Inc
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Filing: 1979-10-18
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Granted: 1981-10-06
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Expires: 1999-10-18
Abstract
Abstract Engine friction is reduced by using in the engine crankcase a formulated motor oil containing a small amount of a reaction product of a fatty acid and monoethanolamine. A di-lower alkyl hydrocarbylphosphonate can optionally be included.
Inventors
- 👤 Andrew G. Papay
- 👤 Joseph P. O'Brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:50
CPC Classifications
C; C10; C10M; C10M133/00; C10M141/00; C10M141/10; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/028; C10M2205/06; C10M2205/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/027; C10M2207/028; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/086; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A lubricating oil composition formulated for use in the crankcase of an internal combustion engine, said composition containing an ashless dispersant and a friction-reducing amount of about 0.1-1.5 weight percent of a product consisting mainly of N-(2-hydroxyethyl)fatty acid amide wherein said fatty acid contains about 12-22 carbon atoms.
Claim 2
Dependent Claim
48 words
A lubricating oil composition formulated for use in the crankcase of an internal combustion engine, said composition containing an ashless dispersant and a friction-reducing amount of about 0.1-1.5 weight percent of a product consisting mainly of N-(2-hydroxyethyl)fatty acid amide wherein said fatty acid contains about 12-22 carbon atoms.
Claim 3
Dependent Claim
14 words
A lubricating oil composition of claim 1 wherein said fatty acid is oleic acid.
Claim 4
Dependent Claim
18 words
A lubricating oil composition of claim 1 wherein said fatty acid is a tall oil fatty acid mixture.
Claim 5
Dependent Claim
22 words
A lubricating oil composition of claim 1 also containing about 0.005-0.75 weight percent of a di-C 1-4 alkyl C 12-36 aliphatic hydrocarbylphosphonate.
Claim 6
Dependent Claim
14 words
A lubricating oil composition of claim 4 wherein said phosphonate is dimethyl-C 12-36 alkylphosphonate.
Claim 7
Dependent Claim
12 words
A lubricating oil composition of claim 5 wherein said alkylphosphonate is dimethyloctadecylphosphonate.
Claim 8
Dependent Claim
14 words
A lubricating oil composition of claim 6 wherein said fatty acid is oleic acid.
Claim 9
Independent Claim
59 words
A method of reducing friction in an internal combustion engine, said method comprising (1) adding to a lubricating oil a friction-reducing amount of about 0.1-1.5 weight percent of a product consisting mainly of N-(2-hydroxyethyl)fatty acid amide wherein said fatty acid contains about 12-22 carbon atoms and (2) placing said lubricating oil in the crankcase of an internal combustion engine.
Claim 10
Independent Claim
59 words
A method of reducing friction in an internal combustion engine, said method comprising (1) adding to a lubricating oil a friction-reducing amount of about 0.1-1.5 weight percent of a product consisting mainly of N-(2-hydroxyethyl)fatty acid amide wherein said fatty acid contains about 12-22 carbon atoms and (2) placing said lubricating oil in the crankcase of an internal combustion engine.
References Cited (Backward Citations)
US2018758A
Cited
US2238478A
Cited
US2403067A
Cited
US2967831A
Cited
US3070546A
Cited
GB1247541A
Cited
US3509052A
Cited
US3778375A
Cited
US4152276A
Cited
US4151101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |