Patent US4683069A successfully refreshed from Google Patents.
US4683069A
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Glycerol esters as fuel economy additives
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1984-01-23
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Granted: 1987-07-28
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Expires: 2004-01-23
Abstract
Abstract Lubricating oil compositions are disclosed exhibiting improved fuel economy which contain 0.05 to 0.2 wt. % of a glycerol partial ester of a C16-C18 fatty acid as the fuel economy additive.
Inventors
- 👤 Phillip W. Brewster
- 👤 Clinton R. Smith
- 👤 Frederick W. Gowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:02
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/68; C10M129/76; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/28; C10M2207/287; C10M2207/289; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A lubricating oil composition formulated for use as a crankcase lubricating oil composition for gasoline or diesel engines consisting essentially of a major amount of a mineral oil of a lubricating viscosity which has incorporated therein (i) about 0.20 weight percent of a glycerol partial ester said partial ester being a mixture of glycerol monooleate and glycerol dioleate, said mixture having weight ratio of 3 parts of glycerol monooleate to 2 parts of glycerol dioleate said ester providing a fuel economy improvement of about 1 to 3 percent when said lubricating oil composition is employed in the crankcase of said engines, (ii) an ashless dispersant, (iii) a metal detergent additive (iv) a zinc dihydrocarbyl dithiophosphate anti-wear additive and (v) an antioxidant, said dispersant, detergent, anti-wear additive and antioxidant being present in conventional amounts to provide their normal attendant functions.
Claim 2
Dependent Claim
139 words
A lubricating oil composition formulated for use as a crankcase lubricating oil composition for gasoline or diesel engines consisting essentially of a major amount of a mineral oil of a lubricating viscosity which has incorporated therein (i) about 0.20 weight percent of a glycerol partial ester said partial ester being a mixture of glycerol monooleate and glycerol dioleate, said mixture having weight ratio of 3 parts of glycerol monooleate to 2 parts of glycerol dioleate said ester providing a fuel economy improvement of about 1 to 3 percent when said lubricating oil composition is employed in the crankcase of said engines, (ii) an ashless dispersant, (iii) a metal detergent additive (iv) a zinc dihydrocarbyl dithiophosphate anti-wear additive and (v) an antioxidant, said dispersant, detergent, anti-wear additive and antioxidant being present in conventional amounts to provide their normal attendant functions.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein said lubricating oil composition contains a viscosity index improver.
Claim 4
Dependent Claim
15 words
The composition of claim 1 wherein said composition is a gasoline engine lubricating oil composition.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein said composition is a diesel engine lubricating oil composition.
References Cited (Backward Citations)
US2911367A
Cited
US3933659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |