US4293432A
Expired / Lapsed
US
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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 03:19
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.
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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 |