Patents by Inventor Yoshifumi Matui

Yoshifumi Matui 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).

  • Ultrawideband communication antenna
    Patent number: 7852269
    Abstract: According to the ultrawideband communication antenna, since surfaces of the antenna element are coated with the first resin layer and the second resin layer each of which is mixed with the nonmagnetic metal powder and has an insulating property and a high specific inductive capacity, the size is largely reduced. Further, since the nonmagnetic metal powder is used, the first resin layer and the second resin layer are free from a loss of magnetism generated therein, thereby enabling to maintain a loss of the antenna to a low level.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: December 14, 2010
    Assignees: Daido Tokushuko Kabushiki Kaisha, Tokyo Institute of Technology
    Inventors: Kazuhisa Tsutsui, Yoshifumi Matui, Akihiko Saito, Mikiko Fukase, Takahiro Aoyagi
  • Ultrawideband communication antenna
    Publication number: 20080143634
    Abstract: According to the ultrawideband communication antenna, since surfaces of the antenna element are coated with the first resin layer and the second resin layer each of which is mixed with the nonmagnetic metal powder and has an insulating property and a high specific inductive capacity, the size is largely reduced. Further, since the nonmagnetic metal powder is used, the first resin layer and the second resin layer are free from a loss of magnetism generated therein, thereby enabling to maintain a loss of the antenna to a low level.
    Type: Application
    Filed: August 6, 2007
    Publication date: June 19, 2008
    Applicants: DAIDO TOKUSHUKO KABUSHIKI KAISHA, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Kazuhisa Tsutsui, Yoshifumi Matui, Akihiko Saito, Mikiko Fukase, Takahiro Aoyagi