US4356097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylphosphonate lubricating oil
Assignee: Edwin Cooper Inc
•
Filing: 1979-02-12
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Granted: 1982-10-26
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Expires: 1999-02-12
Abstract
Abstract Engine crankcase lubricating oil containing a dihydrocarbyl hydrocarbylphosphonate (e.g. diethyl 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 06:19
CPC Classifications
C; C10; C10M; C10M137/00; 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: 8
Claim 1
Independent Claim
73 words
In a motor oil composition formulated for use as a crankcase lubricant for internal combustion engines, said formulated oil containing an ashless dispersant, the improvement comprising including in said composition an amount sufficient to reduce fuel consumption of said engine of a di-ethyl C 12-30 alkylphosphonate, 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
73 words
In a motor oil composition formulated for use as a crankcase lubricant for internal combustion engines, said formulated oil containing an ashless dispersant, the improvement comprising including in said composition an amount sufficient to reduce fuel consumption of said engine of a di-ethyl C 12-30 alkylphosphonate, 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
13 words
A composition of claim 1 wherein said di-lower alkyl alkylphosphonate is di-ethyl octadecylphosphonate.
Claim 4
Dependent Claim
28 words
An improved oil composition of claim 1 containing a detergent amount of an oil-soluble alkaline earth metal salt of a petroleum sulfonic acid or an alkaryl sulfonic acid.
Claim 5
Dependent Claim
15 words
An improved motor oil composition of claim 3 wherein said alkaline earth metal is calcium.
Claim 6
Dependent Claim
17 words
An improved motor oil composition of claim 4 wherein said di-ethyl C 12-30 alkylphosphonate is di-ethyl octadecylphosphonate.
Claim 7
Independent Claim
53 words
A method for improving the fuel economy of an internal combustion engine, said method comprising placing in the crankcase of said engine a lubricating oil formulated for use as a crankcase lubricant containing an ashless dispersant and an amount sufficient to reduce fuel consumption of said engine of a di-ethyl C 12-30 alkylphosphonate.
Claim 8
Independent Claim
53 words
A method for improving the fuel economy of an internal combustion engine, said method comprising placing in the crankcase of said engine a lubricating oil formulated for use as a crankcase lubricant containing an ashless dispersant and an amount sufficient to reduce fuel consumption of said engine of a di-ethyl C 12-30 alkylphosphonate.
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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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |