Patents by Inventor Hidemitsu Tominaga

Hidemitsu Tominaga 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).

  • 5-(2,5-Dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride
    Patent number: 4271079
    Abstract: A novel compound, 5-(2,5-dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride, of the following formula is provided. ##STR1## This novel tetracarboxylic acid dianhydride is useful as a curing agent for epoxy resins.
    Type: Grant
    Filed: September 5, 1979
    Date of Patent: June 2, 1981
    Assignee: Dainippon Ink & Chemicals, Inc.
    Inventors: Hiroshi Maeda, Nagao Ariga, Hiroshi Oikawa, Hidemitsu Tominaga