Patents by Inventor Hiroyuki Imagawa

Hiroyuki Imagawa 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).

  • Oxa(thia)zolidine derivatives
    Patent number: 4937335
    Abstract: The present invention relates to a compound having the formula ##STR1## wherein R.sub.1 denotes C.sub.1-6 alkyl radicals; R.sub.2 denotes halogen atoms, C.sub.1-6 alkyl radicals, C.sub.1-6 haloalkyl radicals, C.sub.1-6 alkoxy radicals, C.sub.1-6 haloalkoxy radicals or the phenyl radicals which may be substituted by methylenedioxy radicals; ##STR2## denotes 5-7 member heterocyclic radicals whose ring constituent atoms comprise 2-6 carbon atoms, 0-1 oxygen atom and 1-2 nitrogen atoms and which may be substituted by C.sub.1-6 alkyl radicals.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: June 26, 1990
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Keiichi Ishimitsu, Hiroyuki Imagawa, Tomio Yamada, Michihiko Matsuda, Yukio Kitagawa
  • Oxa(thia)zolidine derivatives
    Patent number: 4882431
    Abstract: The present invention relates to a compound having the formula ##STR1## wherein R.sub.1 denotes C.sub.1-6 alkyl radicals; R.sub.2 denotes halogen atoms, C.sub.1-6 alkyl radicals, C.sub.1-6 haloalkyl radicals, C.sub.1-6 alkoxy radicals, C.sub.1-6 haloalkoxy radicals or the phenyl radicals which may be substituted by methylenedioxy radicals; ##STR2## denotes 5-7 member heterocyclic radicals whose ring constituent atoms comprise 2-6 carbon atoms, 0-1 oxygen atom and 1-2 nitrogen atoms and which may be substituted b C.sub.1-6 alkyl radicals, are processes and an acaricidal composition comprising its compound as active ingredient(s).
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: November 21, 1989
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Keiichi Ishimitsu, Hiroyuki Imagawa, Tomio Yamada, Michihiko Matsuda, Yukio Kitagawa