Patents by Inventor Paul R Stevenson

Paul R Stevenson 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).

  • ULTRA-LOW MOLECULAR WEIGHT AMIDE/ESTER CONTAINING QUATERNARY AMMONIUM SALTS HAVING SHORT HYDROCARBON TAILS
    Publication number: 20180355267
    Abstract: The present technology is related to amide or ester containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight less 300, and additive packages having such quaternary ammonium salts and improved stability.
    Type: Application
    Filed: December 2, 2016
    Publication date: December 13, 2018
    Inventors: David J. Moreton, Paul R. Stevenson, Hannah Greenfield, David C. Arters, James H. Bush, Paul E. Adams
  • Quaternary ammonium amide and/or ester salts
    Patent number: 10023819
    Abstract: The invention relates to quaternary ammonium amide and/or ester salts and their use as additives, including their use in fuels, such as diesel fuel. The invention particularly relates to the use of quaternary ammonium amide and/or ester salts as detergents in diesel fuels.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: July 17, 2018
    Assignee: The Lubrizol Corporation
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • Diesel detergent without a low molecular weight penalty
    Patent number: 10005978
    Abstract: The composition of the present invention related to a quaternary ammonium salt detergent and the use of such quaternary ammonium salt detergents in a fuel composition to reduce diesel injector deposits and remove or clean up existing deposits on the diesel injectors.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: June 26, 2018
    Assignee: The Lubrizol Corporation
    Inventors: James H. Bush, Robert H. Barbour, David J. Moreton, Hannah Greenfield, Paul R. Stevenson, David C. Arters
  • QUATERNARY AMMONIUM AMIDE AND/OR ESTER SALTS
    Publication number: 20170321137
    Abstract: The invention relates to quaternary ammonium amide and/or ester salts and their use as additives, including their use in fuels, such as diesel fuel. The invention particularly relates to the use of quaternary ammonium amide and/or ester salts as detergents in diesel fuels.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 9, 2017
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • Lubricating composition containing an aromatic compound
    Patent number: 9777240
    Abstract: The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: October 3, 2017
    Assignee: The Lubrizol Corporation
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • LOW MOLECULAR WEIGHT AMIDE/ESTER CONTAINING QUATERNARY AMMONIUM SALTS
    Publication number: 20170121628
    Abstract: The present technology is related to amide or ester containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight ranging from 300 to 750, and the use of such quaternary ammonium salts in fuel compositions to improve the water shedding performance of the fuel composition.
    Type: Application
    Filed: May 27, 2015
    Publication date: May 4, 2017
    Applicant: The Lubrizol Corporation
    Inventors: David J. Moreton, Paul R. Stevenson, Hannah Greenfield, David C. Arters, James H. Bush, Paul E. Adams
  • LOW MOLECULAR WEIGHT IMIDE CONTAINING QUATERNARY AMMONIUM SALTS
    Publication number: 20170114296
    Abstract: The present technology is related to imide containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight ranging from 300 to 750, and the use of such quaternary ammonium salts in fuel compositions to improve the water shedding performance of the fuel composition.
    Type: Application
    Filed: May 27, 2015
    Publication date: April 27, 2017
    Inventors: David C. Arters, David J. Moreton, James H. Bush, Paul R. Stevenson, Paul E. Adams
  • EPOXIDE QUATERNIZED QUATERNARY AMMONIUM SALTS
    Publication number: 20170107441
    Abstract: The present technology is related to quaternary ammonium salts prepared with alcohol functionalized and/or C4 to C20 epoxide quaternizing agents, such as, for example, glycidol and 1,2-butylene oxide, and the use of such quaternary ammonium salts in fuel compositions to improve the water shedding performance of the fuel composition.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 20, 2017
    Inventors: Paul E. Adams, James H. Bush, Hannah Greenfield, Paul R. Stevenson, David J. Moreton
  • HIGH MOLECULAR WEIGHT IMIDE CONTAINING QUATERNARY AMMONIUM SALTS
    Publication number: 20170107438
    Abstract: The present technology is related to imide containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight of 1300 to 3000, and the use of such quaternary ammonium salts in fuel compositions or lubricating compositions to improve the water shedding performance of the fuel or lubricant composition.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 20, 2017
    Inventors: Hannah Greenfield, David J. Moreton, Paul R. Stevenson, David C. Arters, James H. Bush
  • COUPLED QUATERNARY AMMONIUM SALTS
    Publication number: 20170101594
    Abstract: The present technology is related to coupled quaternary ammonium salts, and the use of such coupled quaternary ammonium salts in fuel and oil compositions, or demulsification and/or engine performance of the compositions.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 13, 2017
    Inventors: Paul R. Stevenson, James H. Bush, David J. Moreton
  • HIGH MOLECULAR WEIGHT AMIDE/ESTER CONTAINING QUATERNARY AMMONIUM SALTS
    Publication number: 20170096610
    Abstract: The present technology is related to amide or ester containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight of 1300 to 3000, and the use of such quaternary ammonium salts in fuel compositions to improve the water shedding performance of the fuel composition.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 6, 2017
    Inventors: James H. Bush, Hannah Greenfield, Paul R. Stevenson, David J. Moreton, David C. Arters
  • BRANCHED AMINE CONTAINING QUATERNARY AMMONIUM SALTS
    Publication number: 20170096611
    Abstract: The present technology is related to branched amine containing quaternary ammonium salts, and the use of such quaternary ammonium salts in fuel and oil compositions.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 6, 2017
    Inventors: Paul R. Stevenson, James H. Bush
  • LUBRICATING COMPOSITION CONTAINING AN AROMATIC COMPOUND
    Publication number: 20160145529
    Abstract: The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
    Type: Application
    Filed: January 22, 2016
    Publication date: May 26, 2016
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • Lubricating composition containing an aromatic compound
    Patent number: 9279093
    Abstract: The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 8, 2016
    Assignee: The Lubrizol Corporation
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • LUBRICATING COMPOSITION CONTAINING AN AROMATIC COMPOUND
    Publication number: 20160002564
    Abstract: The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
    Type: Application
    Filed: August 31, 2015
    Publication date: January 7, 2016
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • Lubricating composition containing an aromatic compound
    Patent number: 9150813
    Abstract: The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 6, 2015
    Assignee: The Lubrizol Corporation
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • DIESEL DETERGENT WITHOUT A LOW MOLECULAR WEIGHT PENALTY
    Publication number: 20150267138
    Abstract: The composition of the present invention related to a quaternary ammonium salt detergent and the use of such quaternary ammonium salt detergents in a fuel composition to reduce diesel injector deposits and remove or clean up existing deposits on the diesel injectors.
    Type: Application
    Filed: October 22, 2013
    Publication date: September 24, 2015
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: James H. Bush, Robert H. Barbour, David J. Moreton, Hannah Greenfield, Paul R. Stevenson, David C. Arters
  • DIESEL DETERGENT WITHOUT A LOW MOLECULAR WEIGHT PENALTY
    Publication number: 20150252278
    Abstract: The composition of the present invention related to a quaternary ammonium salt detergent and the use of such quaternary ammonium salt detergents in a fuel composition to reduce diesel injector deposits and remove or clean up existing deposits on the diesel injectors.
    Type: Application
    Filed: October 22, 2013
    Publication date: September 10, 2015
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: James H. Bush, Robert H. Barbour, David J. Moreton, Hannah Greenfield, Paul R. Stevenson, David C. Arters
  • QUATERNARY AMMONIUM AMIDE AND/OR ESTER SALTS
    Publication number: 20150136002
    Abstract: The invention relates to quaternary ammonium amide and/or ester salts and their use as additives, including their use in fuels, such as diesel fuel. The invention particularly relates to the use of quaternary ammonium amide and/or ester salts as detergents in diesel fuels.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • QUATERNARY AMMONIUM SALT OF A POLYALKENE-SUBSTITUTED AMINE COMPOUND
    Publication number: 20150072910
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) polyalkene-substituted amine having at least one tertiary amino group; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 12, 2015
    Inventors: David J. Moreton, Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo