Patents by Inventor Richard Joseph Severt

Richard Joseph Severt 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).

  • Method of forming polyalkene substituted carboxylic acid compositions
    Patent number: 7662887
    Abstract: The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a halogen-assisted reaction of a polyalkene and at least one olefinic, monounsaturated mono- or dicarboxylic acid, anhydride or ester, is reduced when the reaction is conducted in the presence of a controlled amount of a metal compound.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: February 16, 2010
    Assignee: Infineum International Limited
    Inventors: Richard Joseph Severt, Antonio Gutierrez, Jacob Emert, Ramdas Venkatram, Jeremy Roger Spencer, Allison Joan Baker
  • Method of Forming Polyalkene Substituted Carboxylic Acid Compositions
    Publication number: 20090171031
    Abstract: The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a halogen-assisted reaction of a polyalkene and at least one olefinic, monounsaturated mono- or dicarboxylic acid, anhydride or ester, is reduced when the reaction is conducted in the presence of a controlled amount of a metal compound.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 2, 2009
    Inventors: Richard Joseph Severt, Antonio Gutierrez, Jacob Emert, Ramdas Venkatram, Jeremy Roger Spencer, Allison Joan Baker