Thomas R Bidwell

US Patent:

62356917, May 22, 2001

Filed:

Nov 12, 1998

Appl. No.:

9/190159

Inventors:

Alexander B. Boffa - Glen Gardner NJ
Thomas R. Bidwell - Delaware OH
Joe R. Noles - Belle Mead NJ

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C10M12972

US Classification:

508482

Abstract:

A lubricating oil composition is disclosed comprising at least 10% by weight of the total oil composition of an ester of phthalic acid having a viscosity index less than 100. The lubricating oil composition has improved fuel economy and wear performance.

US Patent:

58045376, Sep 8, 1998

Filed:

Nov 21, 1997

Appl. No.:

8/976024

Inventors:

Alexander Bowman Boffa - Glen Gardner NJ
Thomas Richard Bidwell - Hightstown NJ

Assignee:

Exxon Chemical Patents, Inc. - Linden NJ

International Classification:

C10N15920

US Classification:

508398

Abstract:

A low phosphorus passenger car motor oil containing an oil of lubricating viscosity as the major component and a tri-metal detergent mixture as a minor component, wherein the tri-metal detergent mixture comprises at least one calcium overbased metal detergent, at least one magnesium overbased metal detergent and at least one sodium overbased metal detergent, wherein the tri-metal detergent mixture is present in the oil composition in an amount such that the total TBN contributed to the oil composition by the tri-metal detergent mixture is from about 2 to about 12, and wherein the calcium overbased detergent contributes from about 8 to about 42% of the total TBN contributed by the tri-metal detergent mixture, the magnesium overbased detergent contributes from about 29 to about 60% of the total TBN contributed by the tri-metal detergent mixture, and the sodium overbased detergent contributes from about 15 to about 64% of the total TBN contributed by the tri-metal detergent mixture.

US Patent:

63002914, Oct 9, 2001

Filed:

May 19, 1999

Appl. No.:

9/314510

Inventors:

Rolfe J. Hartley - Cranbury NJ
Malcolm Waddoups - Westfield NJ
Ian A. W. Bell - Southmoor, GB
Thomas R. Bidwell - Delaware OH
Gordon R. Farnsworth - Scotch Plains NJ
Taisuke Miyoshi - Yokohama, JP

Assignee:

Infineum USA L.P. - Linden NJ

International Classification:

C10M13300
C10M13518
C10M13710
C10I13900

US Classification:

508363

Abstract:

A lubricating oil composition exhibiting improved low temperature anti-wear performance and improved fuel economy and fuel economy retention properties, which comprises: (a) an oil of lubricating viscosity; (b) at least one calcium detergent; (c) at least one oil soluble molybdenum compound; (d) at least one nitrogen containing friction modifier; and (e) at least one zinc dihydrocarbyldithiophosphate compound, wherein the composition has a NOACK volatility of about 15. 5 wt. % or less and contains from about 0. 058 to 0. 58 wt. % calcium from the calcium detergent, molybdenum in an amount up to about 350 ppm from a molybdenum compound, and phosphorus in an amount up to about 0. 1 wt. % from a zinc dihydrocarbyldithiophosphate compound.

US Patent:

59728531, Oct 26, 1999

Filed:

Nov 12, 1997

Appl. No.:

8/968036

Inventors:

Alexander B. Boffa - Glen Gardner NJ
Thomas R. Bidwell - Hightstown NJ

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C10M16100

US Classification:

508371

Abstract:

A lubricating oil composition comprising oil, and an additive combination comprising a poly alpha-olefin polymer dispersant with a number average molecular weight above 2500, and a metal dihydrocarbyl dithiophosphate sufficient to yield a phosphorous content of up to 0. 1 percent weight based on the total weight of the oil. The poly alpha-olefin polymer can be ethylene alpha-olefin copolymer such as ethylene-1-butene or ethylene-1-butene-hydrocarbyl polyamine. Preferably, the ethylene-1-butene-hydrocarbyl polyamine has a number average molecular weight of about 3300.