Patents by Inventor Makato Izawa

Makato Izawa 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).

  • Linear motor
    Patent number: 5872407
    Abstract: A linear motor has a stator and a movable piece. The stator has a field magnet for propulsion. The movable piece has a bobbin which includes a cylindrical member wrapping around the stator, an armature coil which is located around the bobbin, and a yoke which is attached around the armature coil. A groove is formed on the cylindrical member. At the bottom of the groove, a sensor is arranged for detecting the strength of the magnetic field from the field magnet.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: February 16, 1999
    Assignee: Minolta Co., Ltd.
    Inventors: Toshio Kitaoka, Makato Izawa, Yasuhiro Matsumoto, Katsuhiro Nanba