Patents by Inventor Toshihisa Suyama

Toshihisa Suyama 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).

  • N-substituted chloroacetanilides processes for production thereof, and herbicidal composition comprising the same
    Patent number: 4802907
    Abstract: An N-substituted chloroacetanilide represented by the following formula (I) ##STR1## wherein A represents a member selected from the class consisting of halogen atoms, alkoxy groups having a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkyl group, alkylthio groups having a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkyl group, and alkoxyalkyl groups having a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkyl group and having a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkylene group, R.sub.1, R.sub.2 and R.sub.3 are identical or different, and each represents a hydrogen atom, a halogen atom, a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkyl group, an alkoxy group having a linear or branched, saturated or unsaturated C.sub.1 -C.sub.6 alkyl group R is a hydrogen atom or a linear or branched, saturated or unsaturated C.sub.1 -C.sub.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: February 7, 1989
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Tetsuo Takematsu, Shozo Kato, Masahiko Ishizaki, Toshihisa Suyama