Patents by Inventor Joseph S. Matthews

Joseph S. Matthews 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).

  • Process for producing maleic anhydride from mixture of five and six carbon hydrocarbons
    Patent number: 4065470
    Abstract: A process for producing maleic anhydride from a hydrocarbon mixture containing C.sub.5 monoolefinic hydrocarbons, C.sub.5 diolefinic hydrocarbons, (cyclic and acylic) C.sub.5 paraffins, C.sub.6 paraffins and benzene which involves separating the C.sub.5 cyclic diolefinic hydrocarbons from the mixture and then reacting the resulting mixture with molecular oxygen in vapor phase in the presence of an oxidation catalyst at elevated temperatures.
    Type: Grant
    Filed: August 13, 1976
    Date of Patent: December 27, 1977
    Assignee: Gulf Research & Development Company
    Inventors: John D. Bacha, Joseph S. Matthews, Charles M. Selwitz
  • Quinone alkide synthesis system
    Patent number: 4032547
    Abstract: A novel and efficient oxidation process for preparing quinone alkides from the corresponding tri-alkyl or phenyl hindered phenols, utilizing ferricyanide as the secondary oxidant in combination with persulfate as the primary oxidant.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: June 28, 1977
    Assignee: Gulf Research & Development Company
    Inventors: John D. Bacha, Joseph S. Matthews
  • Reactive hydrophilic epoxy containing polymer
    Patent number: 3932557
    Abstract: A hydrophilic, epoxy containing polymer. The polymer is made by the free radical polymerization of a substituted epoxy monomer containing terminal unsaturation and at least one 1,2-epoxy group with an olefin monomer such as acrylonitrile to form a polymer having free epoxy groups which are available for reaction with other substances. Enzymes are immobilized by reaction with the polymer.
    Type: Grant
    Filed: December 19, 1972
    Date of Patent: January 13, 1976
    Assignee: Gulf Research & Development Company
    Inventor: Joseph S. Matthews