Patents by Inventor Kenichi Toyohara

Kenichi Toyohara 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).

  • Sulfinamide derivatives, a process for preparing the derivatives and herbicides containing the same
    Patent number: 4557750
    Abstract: This invention provides sulfinamide derivatives, a process for preparing the derivatives and herbicides containing the same as the active ingredient, the sulfinamide derivatives being represented by the formula ##STR1## wherein R.sub.1 represents an alkoxy (C.sub.1-6) carbonylmethyl group or cyanomethyl group; R.sub.2 represents a group ##STR2## (in which X and Y are each an alkyl group having 1-6 carbon atoms or alkoxy group having 1-6 carbon atoms and m and n are 0 or an integer of 1 to 3); and Ph represents phenyl.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: December 10, 1985
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Tetsuya Imai, Kenichi Toyohara, Takeshi Goto, Tadateru Murata, Akihide Ando, Toshiro Uchida, Izuru Yamamoto