Patents by Inventor Y{overscore (u)}zi Kawamura

Y{overscore (u)}zi Kawamura 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).

  • Quinoxaline derivatives and herbicidal composition
    Patent number: 6197728
    Abstract: Quinoxaline derivatives having the formula I wherein X represents a halogen atom; R represents —COR1, —CH═CH—COOR2(R2 represents a C1-C4 alkyl group); —CN or —CH2OH, and R1 represents —S—R3 (R3 represents a C1-C4 alkyl or alkenyl group or phenyl or chlorophenyl group), —NH—R4 (R4 represents a C1-C4 alkoxy carbonylalkyl group, hydroxy alkyl group, phenyl group, C1-C4 alkoxy alkyl group or di C1-C4 alkyl amino group) are remarkably effective as selective herbicides.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: March 6, 2001
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Yasukazu Ura, Gozyo Sakata, Kenzi Makino, Yasuo Kawamura, Y{overscore (u)}zi Kawamura, Takasi Ikai, Tosihiko Oguti