Patents by Inventor by Hikotaro Yamamoto, legal representative

by Hikotaro Yamamoto, legal representative 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-Benzoyl-N'-pyridyloxy phenyl urea and insecticidal compositions thereof
    Patent number: 4173637
    Abstract: N-benzoyl N'-pyridyloxy phenyl urea having the formula ##STR1## wherein X.sub.1 represents a halogen atom or methyl group; X.sub.2 represents hydrogen or halogen atom; X.sub.3 and X.sub.4 respectively represent hydrogen or halogen atom; X.sub.5 represents hydrogen or halogen atom; and X.sub.6 represents a halogen atom or nitro or trifluoromethyl group are novel compounds. The compositions containing the compound as the active ingredient are effective as the insecticide for extinction of injurious insects with high safety in agricultural, forestry and hygienic applications.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: November 6, 1979
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Kanichi Fujikawa, Rikuo Nasu, Tadaaki Toki, Toshihiko Yamamoto, deceased, by Hikotaro Yamamoto, legal representative