Patents by Inventor Hidemasa Mizutani

Hidemasa Mizutani 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).

  • Focussing plate
    Patent number: 4421398
    Abstract: A focussing plate for photographic cameras, etc. which is constructed with a multitude of micro-lens shaped curved surfaces arranged on a substrate surface at a space interval among them of from 5 to 30 .mu.m, and other curved surfaces arranged in the boundary spaces among these micro-lens shaped curved surfaces having a curvature just opposite to that of the micro-lens shaped curved surfaces.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: December 20, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Suzuki, Kiyoshi Iizuka, Keiji Ohtaka, Hidemasa Mizutani