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).

  • Patent number: 8961623
    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: May 6, 2010
    Date of Patent: February 24, 2015
    Assignee: The Lubrizol Corporation
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • Patent number: 8821596
    Abstract: The present invention provides a nitrogen-free fuel detergent additive, fuel additive and fuel compositions containing the same, as well as a process for making such additives, where the additive may be described as a hydrocarbyl-substituted alkyloxy and/or hydroxy aromatic compound and may be produced by the reaction of (i) an alkyloxy and/or hydroxy aromatic compound and (ii) a polyolefin containing from 4 to 350 carbon atoms, in the presence of an optional solvent and/or catalyst, wherein the resulting nitrogen free additive provides acceptable engine deposit control that is comparable and/or better than the deposit control provided by nitrogen-containing fuel additives.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: September 2, 2014
    Assignee: The Lubrizol Corporation
    Inventors: Paul R. Stevenson, David J. Moreton, William R. S. Barton, David C. Arters, Jeffry G. Dietz
  • Publication number: 20130172222
    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: December 17, 2010
    Publication date: July 4, 2013
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Matthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
  • Patent number: 8476207
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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 lubricating composition, a fuel composition.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: July 2, 2013
    Inventors: William R. S. Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20120318225
    Abstract: The present invention provides a nitrogen-free fuel detergent additive, fuel additive and fuel compositions containing the same, as well as a process for making such additives, where the additive may be described as a hydrocarbyl-substituted alkyloxy and/or hydroxy aromatic compound and may be produced by the reaction of (i) an alkyloxy and/or hydroxy aromatic compound and (ii) a polyolefin containing from 4 to 350 carbon atoms, in the presence of an optional solvent and/or catalyst, wherein the resulting nitrogen free additive provides acceptable engine deposit control that is comparable and/or better than the deposit control provided by nitrogen-containing fuel additives.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 20, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Paul R. Stevenson, David J. Moreton, William R.S. Barton, David C. Arters, Jeffry G. Dietz
  • Publication number: 20120317874
    Abstract: The present invention provides a nitrogen-free fuel detergent additive, fuel additive compositions containing the same, and fuel compositions containing the same, for use in internal combustion engines, where the additive is the reaction product of (i) hydrocarbyl phenol, cresol or similar material and (ii) a aldehyde, in the presence of an optional catalyst, wherein the additive provides acceptable engine deposit control that is comparable and/or better than the deposit control provided by nitrogen-containing fuel additives.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Paul R. Stevenson, David J. Moreton, Jonathan S. Vilardo, Seth Crawley, James C. Ray, Kurt F. Wollenberg
  • Publication number: 20120192483
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: January 18, 2012
    Publication date: August 2, 2012
    Applicant: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20120138004
    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: May 6, 2010
    Publication date: June 7, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • Patent number: 8153570
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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 lubricating composition.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: April 10, 2012
    Assignee: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Patent number: 8083814
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and amine; 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: Grant
    Filed: January 31, 2011
    Date of Patent: December 27, 2011
    Assignee: The Lubrizol Corporation
    Inventors: Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo
  • Publication number: 20110219674
    Abstract: The present invention relates to fuel additives, fuel additive compositions and fuel compositions, as well as a method for fueling an internal combustion engine, providing reduced metal pick-up by fuels where the compositions of the present invention contain a hydrocarbon substituted with at least two carboxy functionalities in the form of acids or at least one carboxy functionality in the form of an anhydride.
    Type: Application
    Filed: October 1, 2009
    Publication date: September 15, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Robert H. Barbour, Paul R. Stevenson, Emma Fahey
  • Publication number: 20110185626
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: April 13, 2011
    Publication date: August 4, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20110143981
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: February 2, 2011
    Publication date: June 16, 2011
    Applicant: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20110130317
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and amine; 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: January 31, 2011
    Publication date: June 2, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo
  • Patent number: 7951211
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: Grant
    Filed: June 13, 2006
    Date of Patent: May 31, 2011
    Assignee: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Patent number: 7947093
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: Grant
    Filed: June 24, 2010
    Date of Patent: May 24, 2011
    Assignee: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Patent number: 7906470
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and amine; 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: Grant
    Filed: September 1, 2006
    Date of Patent: March 15, 2011
    Assignee: The Lubrizol Corporation
    Inventors: Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo
  • Publication number: 20100257779
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: June 24, 2010
    Publication date: October 14, 2010
    Applicant: The Lubrizol Corporation
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20080307698
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a 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: June 13, 2006
    Publication date: December 18, 2008
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: William Barton, Mark C. Davies, David J. Moreton, Paul R. Stevenson, Dean Thetford
  • Publication number: 20080113890
    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 9, 2006
    Publication date: May 15, 2008
    Applicant: The Lubrizol Corporation
    Inventors: David J. Moreton, Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo