Patents by Inventor Kazuko Etou

Kazuko Etou 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).

  • Ionizing radiation-curable resin composition for optical article, optical article, and surface light source
    Patent number: 5714218
    Abstract: An ionizing radiation-curable resin composition which provides a cured product having no yield point in the stress-strain diagram in tension is disclosed. An optical article prepared from the ionizing radiation-curable resin composition and a surface light source using the optical article are also disclosed. The present invention provides an excellent ionizing radiation-curable resin composition, an excellent optical article comprising a cured product of the resin composition, and an excellent surface light source using the optical article, which have high surface hardness and a high refractive index and are free from deformation, permanent sets, and reduction in weather resistance after curing.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: February 3, 1998
    Assignees: Dainippon Printing Co., Ltd., Dainippon Ink and Chemicals, Inc.
    Inventors: Toshikazu Nishio, Hiroshi Kojima, Hisanori Ishida, Kazuko Etou, Hiroyuki Amemiya, Michiko Takeuchi, Eiji Ichinose, Youichi Abe, Hidenobu Ishikawa