Patents by Inventor Haruhisa Kaijyu

Haruhisa Kaijyu 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).

  • Frictional electrification gun
    Patent number: 5400976
    Abstract: A frictional electrification gun for use in electrostatic painting which can electrostatically charge power paint to a sufficient degree without the need of an elongated and twisted charging portion made up of nonconductive resin tubes. At the inlet of the charging portion made up of nonconductive resin tubes is provided a pre-charging portion for dispersing and charging powder paint. It has a nonconductive resin ring through which powder paint is fed swirling along its inner surface. The paint is thus sufficiently charged.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: March 28, 1995
    Assignee: Matsuo Sangyo Co., Ltd.
    Inventors: Haruhisa Kaijyu, Kenji Horita