Patents by Inventor Noriyoshi Katsuyama

Noriyoshi Katsuyama 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).

  • Hexahydrotriazine compounds and insecticides
    Publication number: 20010046994
    Abstract: Hexahydrotriazine compounds of the formula: 1
    Type: Application
    Filed: December 6, 2000
    Publication date: November 29, 2001
    Applicant: AGRO-KANESHO CO., LTD.
    Inventors: Frank Wu, Akinori Kariya, Noriyoshi Katsuyama, Atsushi Tsuji, Kiyoshi Takasuka, Shigenori Segami, Katsumi Nanjo, Junko Sato
  • Hexahydrotriazine compounds and insecticides
    Patent number: 6187773
    Abstract: A hexahydrotrazine compound which is 1-(2-chloro-5-pyridylmethyl)-3,5-dimethyl-2-nitroiminohexahydro-1,3,5-triazine or 1-(2-chloro-5-thiazolylmethyl)-3,5-dimethyl-2-nitroiminiohexahydro-1,3,5-triazine and insecticides containing the same.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: February 13, 2001
    Assignee: Agro-Kanesho Co., Ltd.
    Inventors: Frank Wu, Akinori Kariya, Noriyoshi Katsuyama, Atsushi Tsuji, Kiyoshi Takasuka, Shigenori Segami, Katsumi Nanjo, Junko Sato
  • Hexahydropyridazine derivative and herbicide containing the same as active ingredient
    Patent number: 5858923
    Abstract: The present invention provides a hexahydropyridazine derivative of the formula (I): ##STR1## wherein R.sup.1 represents an alkynyloxy group, a cycloalkoxy group or an alkoxycarbonylalkylthio group, R.sup.2 represents an alkyl group, a phenyl group or a benzyl group, and X represents a halogen atom. This compound exhibits an excellent herbicidal effect on various weeds in treatment of field soil, foliage treatment and flooding treatment of paddy field, and has an excellent selectivity toward the weeds but not the crop.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: January 12, 1999
    Assignee: Agro-Kanesho Co., Ltd.
    Inventors: Kiyoshi Takasuka, Hideyo Fujii, Seigo Koura, Noriyoshi Katsuyama, Yukiyo Shigeno