Patents by Inventor Lee Matheson

Lee Matheson 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: 9127237
    Abstract: A surfactant composition comprising alkylarylsulfonate molecules wherein more than 30 wt. % of the alkylarylsulfonate molecules of the surfactant composition are species of the formula: [R—X—Ar(SO3)?]a[Mn+]b wherein: X is a linear acyclic aliphatic hydrocarbyl chain; R is bound to a non-terminal carbon atom of X and is selected from H and C1 to C3 alkyl groups; X and R together have 10 or less carbon atoms, preferably 9 or 10 carbon atoms, most preferably 10 carbon atoms; Ar is an aromatic group; M is a cation or cation mixture, n is selected from 1, 2 and 3; and a and b are selected such that the alkylarylsulfonate molecule is electroneutral.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: September 8, 2015
    Assignee: Sasol Germany GmbH
    Inventors: Burkhard Breitzke, Britta Jakobs-Sauter, Clemens Schröder, Udo Schoenkaes, Giuseppe Giuffrida, Lee Matheson, Kermit Kinsley, Michael Cox, Geoffrey Lynn Russell, John Barry Winder
  • Publication number: 20130005626
    Abstract: A surfactant composition comprising alkylarylsulfonate molecules wherein more than 30 wt. % of the alkylarylsulfonate molecules of the surfactant composition are species of the formula: [R—X—Ar(SO3)?]a[Mn+]b wherein: X is a linear acyclic aliphatic hydrocarbyl chain; R is bound to a non-terminal carbon atom of X and is selected from H and C1 to C3 alkyl groups; X and R together have 10 or less carbon atoms, preferably 9 or 10 carbon atoms, most preferably 10 carbon atoms; Ar is an aromatic group; M is a cation or cation mixture, n is selected from 1, 2 and 3; and a and b are selected such that the alkylarylsulfonate molecule is electroneutral.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 3, 2013
    Inventors: Burkhard Breitzke, Britta Jakobs-Sauter, Clemens Schröder, Udo Schoenkaes, Giuseppe Giuffrida, Lee Matheson, Kermit Kinsley, Michael Cox, Geoffrey Lynn Russell, John Barry Winder
  • Patent number: 8329609
    Abstract: A process for preparing an alkoxylation catalyst wherein a catalyst precursor which is formed from an alkoxylated alcohol and an alkaline earth metal compound to form a dispersion of an alkaline earth metal species is reacted with propylene oxide to propoxylate at least a portion of the ethoxylated alcohol.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: December 11, 2012
    Assignee: Sasol North America Inc.
    Inventors: Kenneth Lee Matheson, Masikana Millan Mdleleni, Tad Curtis Hebdon, Herbert Olin Perkins
  • Publication number: 20120078001
    Abstract: A process for preparing an alkoxylation catalyst wherein a catalyst precursor which is formed from an alkoxylated alcohol and an alkaline earth metal compound to form a dispersion of an alkaline earth metal species is reacted with propylene oxide to propoxylate at least a portion of the ethoxylated alcohol.
    Type: Application
    Filed: December 5, 2011
    Publication date: March 29, 2012
    Inventors: Kenneth Lee Matheson, Masikana Millan Mdleleni, Tad Curtis Hebdon, Herbert Olin Perkins
  • Patent number: 6147246
    Abstract: A process for alkoxylating an organic carbonate wherein an alkylene oxide is reacted with an organic carbonate such as a dialkyl carbonate in the presence of a catalytically effective amount of a calcium-containing catalyst to produce alkoxylated carbonates.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: November 14, 2000
    Assignee: Condea Vista Company
    Inventors: Upali Weerasooriya, K. Lee Matheson, Dewey L. Smith, Paul A. Filler, Elida G. Partain, Kelly D. Knouse, Janet L. Watson
  • Patent number: 5488148
    Abstract: A process for sulfonating internal olefins wherein a dilute solution of the internal olefins in an inert hydrocarbon solvent is sulfonated to produce a reaction mixture containing intermediate sulfonated compounds, the intermediate sulfonated compounds in the reaction mixture being neutralized under conditions to form neutralized sulfonated compounds, the neutralized sulfonated compounds in the reaction mixture being hydrolyzed to form a product mixture containing hydroxy alkane sulfonates and alkene sulfonates that are then recovered.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: January 30, 1996
    Assignee: Vista Chemical Company
    Inventors: Upali Weerasooriya, John Lin, K. Lee Matheson, Donald T. Robertson, Janet L. Watson, LeAnn M. Rowe