Patents by Inventor Yoshimichi Koizumi

Yoshimichi Koizumi 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).

  • Surface like light emitting ornamental device using optical fibers
    Patent number: 5249105
    Abstract: This invention is an optical ornamental device comprising, in combination, a number of optical fibers (1) and at least one light source body (10). The optical fibers (1) are intertwined in the direction of the length to form a surface-like light leakage ornamental section (7) having a light scattering film layer (14) provided on one surface thereof to thereby increase the luminance.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: September 28, 1993
    Assignee: Aromac Co. Ltd.
    Inventor: Yoshimichi Koizumi