Patents by Inventor Kenji Hagiwara

Kenji Hagiwara 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).

  • Miniature D-C motor
    Patent number: 5270596
    Abstract: A miniature d-c motor comprising a case on the inner circumferential surface of which a permanent magnet is mounted, a rotor consisting of an armature and a commutator, and a case cap on which brushes and input terminals are mounted; the rotor being supported via bearings provided on the case and the case cap, in which the miniature d-c motor is housed in a hermetically-sealed internal space defined by the hermetic case formed into a bottomed hollow cylindrical shape and the hermetic case cap fitted to an open end of the hermetic case, and an output shaft connected to a rotor shaft via a magnetic coupling is rotatably provided outside the bottom of the hermetic case.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: December 14, 1993
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Isao Shibuya, Kenji Hagiwara, Kazutoshi Yoshimura, Kenji Tsuyama
  • Thia (oxa) diazole derivatives
    Patent number: 4812161
    Abstract: Thia-diazole derivatives having the following partial structural formula had selective herbicidal activity on some crops.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: March 14, 1989
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Kenji Hagiwara, Hisao Ishikawa, Hideo Hosaka, Hideo Inaba
  • Benzoylurea derivatives
    Patent number: 4713396
    Abstract: A compound having the formula ##STR1## wherein R.sub.1 represents halogen or methyl;R.sub.2 represents hydrogen or halogen;each of R.sub.3 and R.sub.4 represents halogen; andeach of X and Y represents oxygen or sulfur.The compound is useful as insecticide.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: December 15, 1987
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Katsuyata Ikura, Kenji Hagiwara, Fumihiko Nagasaki, Tomio Yamada, Hidemitsu Takahashi, Renpei Hatano