US4158633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil
Assignee: Edwin Cooper Inc
•
Filing: 1978-03-30
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Granted: 1979-06-19
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Expires: 1998-03-30
Abstract
Abstract Engine crankcase lubricating oil containing a dihydrocarbyl hydrocarbylphosphonate (e.g. dimethyl octadecylphosphonate) exhibits reduced friction which results in an increase in gasoline mileage thus conserving energy.
Inventors
- 👤 Andrew G. Papay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:33
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M135/00; C10M135/08; C10M135/10; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/12; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/028; C10M2205/06; C10M2207/00; 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; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/065; 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: 11
Claim 1
Independent Claim
89 words
In a motor oil composition formulated for use as a crankcase lubricant for internal combustion engines, said formulated oil containing an ashless dispersant and an oil soluble alkaline earth metal salt of a petroleum sulfonic acid or an alkaryl sulfonic acid, the improvement comprising including an amount sufficient to reduce fuel consumption of said engine of a dimethyl C 12-30 -alkyl phosphonate said improvement functioning to reduce fuel consumption of an internal combustion engine when said motor oil composition is used as the crankcase lubricating oil in said engine.
Claim 2
Dependent Claim
89 words
In a motor oil composition formulated for use as a crankcase lubricant for internal combustion engines, said formulated oil containing an ashless dispersant and an oil soluble alkaline earth metal salt of a petroleum sulfonic acid or an alkaryl sulfonic acid, the improvement comprising including an amount sufficient to reduce fuel consumption of said engine of a dimethyl C 12-30 -alkyl phosphonate said improvement functioning to reduce fuel consumption of an internal combustion engine when said motor oil composition is used as the crankcase lubricating oil in said engine.
Claim 3
Dependent Claim
14 words
An improved motor oil composition of claim 1 wherein said phosphonate is dimethyl octadecylphosphonate.
Claim 4
Dependent Claim
18 words
An improved oil composition of claim 1 containing 0.01-0.5 wt % zinc as an oil soluble zinc dihydrocarbyldithiophosphate.
Claim 5
Dependent Claim
12 words
An improved oil composition 3 wherein said phosphonate is a dimethyl octadecylphosphonate.
Claim 6
Dependent Claim
12 words
An improved oil composition 3 wherein said phosphonate is a dimethyl octadecylphosphonate.
Claim 7
Dependent Claim
39 words
An improved composition of claim 1 containing an oil soluble alkaline earth metal salt of a petroleum sulfonic acid or alkaryl sulfonic acid in an amount which provides about 0.05-1.0 wt % alkaline earth metal in said oil composition.
Claim 8
Dependent Claim
13 words
An improved oil composition of claim 5 wherein said phosphonate is dimethyl octadecylphosphonate.
Claim 9
Dependent Claim
43 words
An improved oil composition of claim 2 containing about 0.01-0.5 wt % zinc as an oil soluble zinc dialkyl dithiophoshate and about 0.05-1.5 wt % alkaline earth metal as an oil soluble alkaline earth metal petroleum sulfonate or alkaline earth metal alkaryl sulfonate.
Claim 10
Dependent Claim
29 words
A method of lowering the fuel consumption of an internal combustion engine, said method comprising adding a motor oil composition of claim 1 to the crankcase of said engine.
Claim 11
Dependent Claim
11 words
A method of claim 8 wherein said phosphonate is dimethyl octadecylphosphonate.
References Cited (Backward Citations)
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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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |