Patents by Inventor Keiji Kitazawa

Keiji Kitazawa 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).

  • Patent number: 5621611
    Abstract: A display device can be capable of suppressing electromagnetic interference and be easily disassembled into pieces of different materials such as plastics and metallic materials. A duct is formed in a part of a plastic frame and a shielding case having resilience is pressed from above into position on the duct. Furthermore, modules are attached on the frame, which is then mounted to the body of the device. Thus, the lower part of the shielding case contacts the metallic bottom chassis to thereby shield cables of a front module. Thus, the plastic material of the front module and the metallic material of the cable shielding case and others, being separable into different pieces, can easily be recovered for recycling purposes.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Isao Kizuya, Keiji Kitazawa
  • Patent number: D318465
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: July 23, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Atuo Yoshida, Masayuki Tamasaku, Keiji Kitazawa, Kunihiko Ohnuma