Charles A Passut, 796609 Water View Ln, Mineral, VA 23117

6767871, Jul 27, 2004

Aug 21, 2002

10/225040

Mark Thomas Devlin - Richmond VA
Charles A. Passut - Midlothian VA
John T. Loper - Richmond VA

Ethyl Corporation - Richmond VA

C10M13710

508371, 508375, 508470, 508545

The lubricating oil of the present invention has a viscosity suitable for use in a diesel engine and includes at least one functionalized olefin polymer, and at least one zinc dialkyl dithiophosphate (ZDDP). The ZDDP is made from a mixture of primary alcohols or a mixture of primary and secondary alcohols, wherein the lubricant has a high boundary film value greater than or equal to 15, and preferably greater than 60, as measured by using a High Frequency Reciprocating Rig (HFRR).

7253231, Aug 7, 2007

Jan 31, 2005

11/047067

Cathy C. Devlin - Richmond VA, US
Charles A. Passut - Midlothian VA, US
Joe S. Bradley - Midlothian VA, US
Michael A. Danylo - Midlothian VA, US
Yoon Song - Richmond VA, US
Sanjay Srinivasan - Midlothian VA, US
Zhaoyao Joe Qiu - Baton Rouge LA, US
Errol Joseph Olivier - Baton Rouge LA, US
Patric Meessen - La Calamine, BE
Gerhard Van Vliet - Maastricht, NL
Gerardus Arnoldus Rademakers - Heerlen, NL
Johannes Hendrik Geesink - Schinnen, NL

Afton Chemical Corporation - Richmond VA

C08F 255/00
C08F 255/02
C08L 51/06

525 64, 525 69, 525285, 525301, 5253261, 525293, 525375, 508225, 508231

A novel highly grafted, multi-functional olefin copolymer is provided comprising an additive reaction product of a method comprising reacting acylating agent with an olefin copolymer having a number average molecular weight greater than about 1,000 in the presence of a free radical initiator and essentially free of hydrocarbon solvent in an extruder to provide an olefin copolymer intermediate comprising an acylated olefin copolymer having a degree of grafting (DOG) of at least 0. 5 wt. %, which copolymer intermediate's molecular weight is reduced, vacuum stripped of unreacted components, pelletized, dissolved in a neutral oil (preferably with inert gas sparging), and further reacted with a polyamine to provide a grafted multi-functional olefin copolymer viscosity modifier, and lubricating oil concentrates and compositions containing the same and uses thereof.

7732390, Jun 8, 2010

Nov 24, 2004

10/995097

Abbas Kadkhodayan - Collinsville IL, US
Joe S. Bradley - Midlothian VA, US
Cathy C. Devlin - Richmond VA, US
Charles A. Passut - Midlothian VA, US

Afton Chemical Corporation - Richmond VA

C10L 1/22

508542, 508287

This invention relates to detergents, lubricating oil additives and compositions, and methods of preparing detergents, lubricating oil additives and compositions. More specifically, this invention relates to novel phenolic dimers.

8093189, Jan 10, 2012

Sep 7, 2006

11/516765

Cathy C. Devlin - Richmond VA, US
Charles A. Passut - Midlothian VA, US
Paul G. Griffin - Glen Allen VA, US

Afton Chemical Corporation - Richmond VA

C10M 149/00
C10M 159/12

508231, 508221, 508287, 508293, 508579

Lubricating oil compositions are provided that inhibit coolant-induced oil filter plugging in heavy-duty diesel engines, and particularly CJ-4 and CI-4 PLUS compliant lubricating oil compositions that inhibit coolant-induced oil filter plugging in exhaust gas recirculation or recycle engines.

8420583, Apr 16, 2013

Jan 24, 2008

12/019062

Philip J. Boegner - Glen Allen VA, US
Charles A. Passut - Midlothian VA, US

Afton Chemical Corporation - Richmond VA

C10M 169/02
C10M 143/00

508287, 508391, 508577, 508460, 508591

A lubricating oil composition and methods of operating an internal combustion engine to provide improved engine operation. The lubricating composition includes a major amount of oil of lubricating viscosity; and a minor amount of at least one highly grafted, multi-functional olefin copolymer made by reacting an acylating agent with an olefin copolymer having a number average molecular weight greater than about 10,000 up to about 50,000 in the presence of a free radical initiator to provide an acylated olefin copolymer having a degree of grafting (DOG) of the acylating agent on the olefin copolymer of from above about 1. 5 to about 3. 0 wt. %. The acylated olefin copolymer is then reacted with an amine to provide the highly grafted, multi-functional olefin copolymer.

2004025, Dec 23, 2004

Jun 18, 2003

10/464614

Munmaya Mishra - Richmond VA, US
David Venhaus - Glen Allen VA, US
Charles Passut - Midlothian VA, US

C10M143/00
C10M149/00

508/231000, 508/241000, 508/375000, 508/454000, 508/469000, 508/591000

The use in a cooled exhaust gas recirculation (EGR) engine of an olefin copolymer dispersant viscosity index improver to reduce or eliminate oil thickening and sludge formation is provided. Also provided are lubricated cooled EGR engines with ability to pass rigorous oil viscosity and emission standards.

2006000, Jan 5, 2006

Jul 2, 2004

10/884466

Cathy Devlin - Richmond VA, US
Gregory Anderson - Midlothian VA, US
Charles Passut - Midlothian VA, US

C10M 149/00
C10M 159/12

508454000, 508508000

A lubricated surface and method for lubricating moving parts. The lubricated surface includes a thin film coating of a lubricant composition containing a base oil of lubricating viscosity and from about 9.5 to about 25 percent by weight of an additive comprising a nitrogen containing olefin copolymer derived from an olefin copolymer having grafted thereon from about 0.15 to about 1.0 carboxylic groups per 1000 number average molecular weight units of the copolymer. The copolymer has a number average molecular weight ranging from about 10,000 to about 100,000. The amount of additive in the lubricant composition is based on a total weight of the lubricant composition.

2007000, Jan 4, 2007

Jul 1, 2005

11/174172

Naresh Mathur - Midlothian VA, US
Carl Esche - Richmond VA, US
Charles Passut - Midlothian VA, US

C10M 159/20

508391000, 508398000, 508460000, 508574000, 508591000, 508586000

A release additive composition including at least one overbased detergent present in a form chosen from a solid and a semi-solid is disclosed. Also disclosed is a lubrication system and a method of improving the drain interval of oil.