Patents by Inventor Kazuyuki Maeda

Kazuyuki Maeda 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).

  • 2-Substituted phenoxy-3-chloro-5-trifluoromethyl pyridine useful as a herbicide
    Patent number: 4235621
    Abstract: 2-Substituted phenoxy-3-chloro-5-trifluoromethyl pyridine having the formula (I): ##STR1## wherein X is a hydrogen atom; a (C.sub.1 -C.sub.4)alkyl group; a (C.sub.1 -C.sub.4)alkoxy group; a --COOR.sub.1 group wherein R.sub.1 is a hydrogen atom, a cation or a (C.sub.1 -C.sub.4)alkyl group; or an ##STR2## group wherein R.sub.2 is a hydrogen atom, a cation, a (C.sub.1 -C.sub.4)alkyl group or a benzyl group; and Y is a halogen atom, a nitro group or a cyano group, useful as a herbicide.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: November 25, 1980
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Kanichi Fujikawa, Takahiro Haga, Tadaaki Toki, Terumasa Komyoji, Nobuyuki Sakashita, Kazuyuki Maeda
  • Herbicidal composition
    Patent number: 4017295
    Abstract: A herbicidal composition which comprises an active ingredient of a diphenylether having the formula ##STR1## wherein X represents a chlorine atom or a trifluoromethyl group; R represents a methyl or ethyl group and n represents an integer of 2 or 3; and an agriculturally acceptable adjuvant.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: April 12, 1977
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryohei Takahashi, Isao Yokomichi, Kazuyuki Maeda, Takahiro Haga
  • Diphenyl ether compounds
    Patent number: 3957852
    Abstract: A diphenyl ether compound, such as 2,4'-dichloro-4-trifluoromethyl-3'-carbomethoxydiphenyl ether, which has herbicidal properties and is effective for controlling weeds using soil and/or foliage application and herbicidal compositions containing the same.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: May 18, 1976
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Kanichi Fujikawa, Isao Yokomichi, Nobuyuki Sakashita, Kazuyuki Maeda, Takahiro Haga