Patents by Inventor Takatoshi Nanba

Takatoshi Nanba 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).

  • Apparatus and method for producing a solid magnet roller using a movable mold
    Publication number: 20020024169
    Abstract: An apparatus and a method for manufacturing a magnet roller makes it possible to remarkably reduce defects on the surface or the inside of a magnet roller and also to control “warp” of the magnet roller sufficiently so that it does not adversely affect the functions of the magnet roller. A metal mold for magnetic field injection molding is composed of two fixed mold counterparts and a movable mold counterpart. The movable mold counterpart is moved to increase the volume of the cavity of the metal mold as a resin-bonded magnet material is injected into the mold.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 28, 2002
    Applicant: Bridgestone Corporation
    Inventors: Toshimichi Nishizawa, Takatoshi Nanba, Kazuhiro Nakada
  • Apparatus for producing a solid magnet roller using a movable mold
    Patent number: 6302669
    Abstract: An apparatus for manufacturing a magnet roller makes it possible to remarkably reduce defects on the surface or the inside of a magnet roller and also to control “warp” of the magnet roller sufficiently so that it does not adversely affect the functions of the magnet roller. A metal mold for magnetic field injection molding is composed of two fixed mold counterparts and a movable mold counterpart. The movable mold counterpart is moved to increase the volume of the cavity of the metal mold as a resin-bonded magnet material is injected into the mold.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: October 16, 2001
    Assignee: Bridgestone Corporation
    Inventors: Toshimichi Nishizawa, Takatoshi Nanba, Kazuhiro Nakada