Patents by Inventor Hirotoshi Matui

Hirotoshi Matui 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).

  • Recording device such as electronic blackboard
    Patent number: 4752800
    Abstract: A recording device such as an electronic blackboard has a transparent and flexible drawing sheet in an endless form which stretches around a pair of parallel rollers and on which characters and figures can be erasably drawn. A uniformly charged photosensitive sheet is disposed behind this stretched drawing sheet and light is made incident thereon through the drawing sheet such that a latent image is formed on the photosensitive sheet corresponding to the characters and figures on the drawing sheet. A printed copy of this latent image is obtained by the known electrophotographic technique.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: June 21, 1988
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hirotoshi Matui