Patents by Inventor Youhei Shinozawa

Youhei Shinozawa 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).

  • Molded optical component with gate stubs removed from peripheral rim portions
    Patent number: 5975882
    Abstract: A molded optical component which is comprised of a lens portion, an annular outer rim integrally formed around the circumference of the lens portion, an annular reference surface formed on the circumference of the outer rim in a predetermined width along one end thereof, and an obliquely cut surface formed across the circumference of the outer rim by stripping a gate stub therefrom. The obliquely cut surface is extended from the other end of the outer rim up to a position falling short of near boundaries of the reference surface.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: November 2, 1999
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Yoshimitsu Nomura, Youhei Shinozawa, Masaaki Fukuda