Patents by Inventor Masahito Kawasaki

Masahito Kawasaki 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).

  • Resin bonded rare earth magnet
    Patent number: 7169468
    Abstract: A resin bonded rare earth magnet, compression molded from rare earth-transition alloy powder and thermosetting resin, having a magnet 1 comprising a mixture of thermosetting resin and rare earth-transition alloy powder with a particle size of between 20 and 300 microns, a filling material 3 with particle size between 0.1 and 15 microns which is used to fill in the depressions 2 on the surface of said magnet 1 and is then fixed with said thermosetting resin, and a corrosion inhibiting coat 4 made from synthetic resin applied to the surface of said magnet 1 which has been rendered smooth by the application of said filling material into the depressions on its surface.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: January 30, 2007
    Assignee: Minebea Co., Ltd
    Inventors: Toshihiko Miura, Masahito Kawasaki, Shunji Suzuki, Shuichi Nishida
  • RESIN BONDED RARE EARTH MAGNET
    Publication number: 20030012948
    Abstract: A resin bonded rare earth magnet, compression molded from rare earth-transition alloy powder and thermosetting resin, having a magnet body 1 comprising a mixture of thermosetting resin and rare earth-transition alloy powder with a particle size of between 20 and 300 microns, a filling material 3 with particle size between 0.1 and 15 microns which is used to fill in the depressions 2 on the surface of said magnet 1 and is then fixed with said thermosetting resin, and a corrosion inhibiting coat 4 made from synthetic resin applied to the surface of said magnet 1 which has been rendered smooth by the application of said filling material into the depressions on its surface.
    Type: Application
    Filed: October 18, 1999
    Publication date: January 16, 2003
    Inventors: TOSHIHIKO MIURA, MASAHITO KAWASAKI, SHUNJI SUZUKI, SHUICHI NISHIDA