Patents by Inventor Soichiro Nagayama

Soichiro Nagayama 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).

  • Pyridonesulfonylurea compounds, process for their production and herbicides containing them
    Patent number: 5869428
    Abstract: A pyridonesulfonylurea compound of the formula (I) or its salt: ##STR1## wherein Q is ##STR2## for use as a herbicide, wherein the variables are hereinbelow defined.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: February 9, 1999
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Yasuo Morishima, Shigeo Murai, Yoshiyuki Aoyama, Hiroshi Sasaki, Hiroshi Kikugawa, Soichiro Nagayama, Makiko Mitani