Patents by Inventor Roger M. Sheets

Roger M. Sheets has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8877956
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: November 4, 2014
    Assignee: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Patent number: 8871696
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: October 28, 2014
    Assignee: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Patent number: 8853422
    Abstract: The present disclosure relates to a compound of the formula I or a tribologically acceptable salt, solvate, hydrate, or proadditive thereof, wherein R1, R2 and R4 are as defined herein. Such novel pyrrolidine, or succinimide, derivatives may be useful as friction modifiers in lubricant compositions. This disclosure also relates to a method of using such friction modifier compounds in lubricating fluid formulations to lubricate machine parts, including gear, axle, engine, and transmission parts, and to lubricant compositions containing such friction modifier compounds.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: October 7, 2014
    Assignee: Afton Chemical Corporation
    Inventors: Roger M. Sheets, Nubar Ozbalik
  • Patent number: 8709985
    Abstract: There is disclosed a lubricant composition comprising a base oil comprising a reduced total amount of cyclobenzene as compared to another base oil. Methods of using the lubricant composition for preventing and/or reducing the deposit formation in an engine are also disclosed.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: April 29, 2014
    Assignee: Afton Chemical Corporation
    Inventors: Mark T. Devlin, John T. Loper, Roger M. Sheets, Todd M. Dvorak
  • Publication number: 20140066346
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Application
    Filed: November 8, 2013
    Publication date: March 6, 2014
    Applicant: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Publication number: 20140066646
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Application
    Filed: November 8, 2013
    Publication date: March 6, 2014
    Applicant: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Patent number: 8618030
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: December 31, 2013
    Assignee: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Publication number: 20130281337
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Application
    Filed: May 7, 2013
    Publication date: October 24, 2013
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. Degonia
  • Patent number: 8466096
    Abstract: The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I where R1, R2, R3, R4, R5, R6, and R7 are as defined herein. Such a compound may exhibit improved antiwear performance and thermal stability in lubricating compositions.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: June 18, 2013
    Assignee: Afton Chemical Corporation
    Inventors: John Marshall Baker, Naresh Mathur, Roger M. Sheets, David J. DeGonia
  • Patent number: 8349778
    Abstract: The present invention provides an additive composition comprising (a) at least one ash-containing phosphorus compound prepared by a primary or secondary alcohol or mixtures thereof, and (b) a salt of at least one hydrocarbylamine and at least one hydrocarbyl acid phosphate. Further, the present invention provides a lubricating composition comprising (a) at least one ash-containing phosphorus compound prepared by a primary or secondary alcohol or mixtures thereof, and (b) a salt of at least one hydrocarbylamine and at least one hydrocarbyl acid phosphate, and methods of use thereof.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: January 8, 2013
    Assignee: Afton Chemical Corporation
    Inventors: Gregory H. Guinther, John T. Loper, Roger M. Sheets
  • Patent number: 8299003
    Abstract: There is disclosed herein an additive composition including a compound of formula (III): wherein R1, R2, R3, R4, R5, R6 , R7, R8, and R9are independently selected from the group consisting of hydrogen, cyano, and hydrocarbyl groups comprising from about 1 to about 30 carbon atoms.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: October 30, 2012
    Assignee: Afton Chemical Corporation
    Inventors: David J. DeGonia, Chip Hewette, Roger M. Sheets, Ronald L. Phillips, John T. Loper
  • Patent number: 8211840
    Abstract: Lubricated surfaces and lubricant compositions for lubricating a surface. The lubricated surface is provided by a lubricant composition including a base oil of lubricating viscosity, at least one metal salt of phosphorothioic acid, and an ashless, sulfur-free organophosphorus compound providing a metal to phosphorus weight ratio ranging from about 0.25:1 to about 1.0:1 by weight. The lubricant composition is substantially devoid of molybdenum.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: July 3, 2012
    Assignee: Afton Chemical Corporation
    Inventors: Mark T. Devlin, John T. Loper, Roger M. Sheets, Gregory H. Guinther, Jeffrey M. Guevremont
  • Patent number: 8198221
    Abstract: Lubricant formulations and methods for producing lubricant formulations are described that provide improved wear protection in engines operated using ethanol-based fuels. The improved wear protection may be provided by an increased amount of overbased calcium detergent present in the formulation.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: June 12, 2012
    Assignee: Afton Chemical Corporation
    Inventors: Gregory H. Guinther, Roger M. Sheets
  • Patent number: 7928260
    Abstract: There is disclosed a salt of a sulfur-containing, phosphorus-containing compound. There is also disclosed a method of making the salt.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: April 19, 2011
    Assignee: Afton Chemical Corporation
    Inventors: David J. DeGonia, Roger M. Sheets, Ronald L. Phillips
  • Patent number: 7888299
    Abstract: In its broadest concept, the present invention relates to an improved gear oil comprising: a) a base oil having a viscosity range of 4 to 32 cSt at 100° C.; b) a maximum level of hydrocarbyl polysulfide with a minimum level of active S species; c) a dihydrocarbyl dithiophosphate ester or salt; and d) a dihydrocarbyl (mono)thiophosphate amine salt, essentially free of phosphite.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: February 15, 2011
    Assignee: Afton Chemical Japan Corp.
    Inventors: Jeffrey L. Milner, Masao Seki, Roger M. Sheets, Kenji Yatsunami
  • Patent number: 7879775
    Abstract: A lubricant composition comprising a phosphorus-containing compound and a base oil comprising less than about 3% by weight of tetracycloparaffins is disclosed. Methods of making and using the lubricant composition are also disclosed.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: February 1, 2011
    Assignee: Afton Chemical Corporation
    Inventors: Mark T. Devlin, Tze-chi Jao, John T. Loper, Roger M. Sheets, Gregory H. Guinther
  • Patent number: 7737094
    Abstract: Lubricant formulations and methods for producing lubricant formulations are described that provide improved wear protection in engines operated using ethanol-based fuels. The improved wear protection may be provided by an increased amount of overbased calcium detergent present in the formulation.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: June 15, 2010
    Assignee: Afton Chemical Corporation
    Inventors: Gregory H. Guinther, Roger M. Sheets
  • Publication number: 20100056407
    Abstract: Different zinc dialkyldithiophosphate (ZDDPs) exhibit different volatilities and have different effects on automotive emissions control catalysts. The ZDDPs and their respective decomposition fragments that have low volatility will have a correspondingly lower detrimental effect on combustion emissions control systems, because there are simply fewer phosphorous atoms that will pass through the combustion system to reach the emissions control system. Specifically, it has been discovered that ZDDPs that contain a significant fraction of MIBC ZDDP exhibit significantly lower volatility than other ZDDPs.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Applicant: AFTON CHEMICAL CORPORATION
    Inventors: Roger M. Sheets, Gregory H. Guinther, John T. Loper
  • Patent number: 7592490
    Abstract: In general terms, the present invention includes a process for producing a new zinc dialkyldithiophosphate (ZDDP) offering improved seal compatibility characteristics in engine and transmission oil packages. The present invention additionally includes zinc dialkyldithiophosphate produced in accordance with the disclosed methodologies, and oil additives, lubricants, and engines and transmission comprising the zinc dialkyldithiophosphate of the present invention.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: September 22, 2009
    Assignee: Afton Chemical Corporation
    Inventors: Paul M. Thomson, Peter Growcott, Roger M. Sheets, Abbas Kadkhodayan, Christopher James Dudding
  • Publication number: 20090111722
    Abstract: Lubricant formulations and methods for producing lubricant formulations are described that provide improved wear protection in engines operated using ethanol-based fuels. The improved wear protection may be provided by an increased amount of overbased calcium detergent present in the formulation.
    Type: Application
    Filed: October 25, 2007
    Publication date: April 30, 2009
    Inventors: Gregory H. GUINTHER, Roger M. Sheets