Patents by Inventor Toshihiro Kudai

Toshihiro Kudai 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).

  • Cyclopentanone intermediates 2-(benzothiazolyl-2)
    Patent number: 4238615
    Abstract: 2-Substituted-cyclopentanone derivatives represented by the formula ##STR1## are prepared by subjecting a 2-benzothiazolylsulfenamide derivative represented by the formula ##STR2## and cyclopentanone to condensation reaction, or by reacting the resulting condensation product with a hydrocarbon halide represented by the formulaR.sub.1 X.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: December 9, 1980
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Sigeru Torii, Hideo Tanaka, Toshihiro Kudai