Patents by Inventor Norimasa Akiyama

Norimasa Akiyama 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).

  • Liquid crystal display with black matrix formed by a black resin optical shielding layer and a blue filter layer
    Patent number: 6392729
    Abstract: Disclosed are a liquid crystal display device capable of obtaining preferable display images, whose manufacturing cost is low, and which does not deteriorate the environment at the time of fabrication and a method for fabricating the same.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: May 21, 2002
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Akiya Izumi, Masao Yoshioka, Tatsuo Hamamoto, Norimasa Akiyama