Patents by Inventor Takashi Kizawa

Takashi Kizawa 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).

  • Rotary body of hard material with plastic supporter
    Patent number: 4886377
    Abstract: A rotary body of hard material with a plastic supporter and a method of manufacturing therefor, which essentially comprises a coating film coated with the rotary body and removed after molding so as to make a clearance between the rotary body and the supporter, so that rotation of the rotary body may be allowed smoothly. The method of this invention defines steps of molding, coating of film and removing of the film so as to obtain rotation of rotary body relative to the plastic supporter.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: December 12, 1989
    Assignee: Adachishin Industrial Co., Ltd.
    Inventors: Minoru Adachi, Takashi Kizawa
  • Diaphragm for electroacoustic transducer
    Patent number: 4753969
    Abstract: A diaphragm for an electroacoustic transducer comprising stratiform mineral of layers into which a hardener or an agent for facilitating hardening is adsorbed between the layers, thermosetting resin monomer, and carbonfibers which constitute a composite material which is formed under heat and pressure. The diaphragm is increased in rigidity which is required as physical properties therefor and is easy in forming.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: June 28, 1988
    Assignee: Onkyo Kabushikikaisha
    Inventors: Shinya Mizone, Tamotsu Abe, Minoru Adachi, Takashi Kizawa