Patents by Inventor Norihisa Yonekura

Norihisa Yonekura 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).

  • 1,2,6-triphenyl-4(1H)-pyridinone derivatives, and uses as fungicidal agents
    Patent number: 4757081
    Abstract: New substituted derivatives of 1,2,6-triphenyl-4(1H)-pyridinone are now provided, which are useful as fungicidal agent having practically valuable and improved fungicidal activities against a variety of phyto-pathogenic microorganisms, especially fungi and which show low toxicity to animals, including humans. These new compounds may be produced by different processes.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: July 12, 1988
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Norihisa Yonekura, Takashi Yumita, Yukio Nezu, Yoshiyuki Kojima, Shin-ichiro Maeno, Shigeharu Yaguchi