Patents by Inventor Yoshikazu Umezawa

Yoshikazu Umezawa 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).

  • Reflective screen for a liquid crystal projector and method for producing the same
    Patent number: 5768019
    Abstract: To improve non-flammability, there is provided a reflective screen for a liquid crystal projector or display in an aircraft. An antireflective member holding an antireflective function on its surface is provided on a top surface of a polarizing film through urethane resin system adhesive, and a reflective member is provided on a bottom surface of the polarizing film through an acrylic resin system pressure sensitive adhesive.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Masatoshi Niwa, Yoshikazu Umezawa, Hajime Maruta