Patents by Inventor Sachiko Miyagawa

Sachiko Miyagawa 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).

  • Publication number: 20090142562
    Abstract: An antistatic antiglare film that can remain antistatic and transparent even after a long time of use, particularly even after a long time of use at high temperature or high humidity. The antistatic antiglare film of the invention includes a transparent substrate film and an antiglare layer disposed thereon, the antiglare layer includes a polymeric antistatic agent, optically-transparent fine particles and a binder.
    Type: Application
    Filed: August 11, 2006
    Publication date: June 4, 2009
    Inventors: Sachiko Miyagawa, Seiji Shinohara
  • Publication number: 20080192351
    Abstract: There is provided an antireflection film that can prevent the occurrence of interference fringes and, at the same time, has antistatic properties and excellent coating film adhesion. The first antireflection film comprises a transparent base material film 1 and, provided on the transparent base material film in the following order, an antistatic hardcoat layer 2-1 comprising an antistatic agent selected from polymeric antistatic agents, crosslinking group-containing low-molecular antistatic agents, and electrically conductive antistatic agents and having hard properties, and a low-refractive index layer 3 having a lower refractive index than an underlying layer in direct contact with the low-refractive index layer. The occurrence of interference fringes can be prevented by bringing the absolute value of the difference in refractive index between the transparent base material film 1 and the antistatic hardcoat layer 2-1 to not more than 0.03.
    Type: Application
    Filed: March 8, 2005
    Publication date: August 14, 2008
    Applicant: Dai Nippon Printing Co., LTd
    Inventors: Sachiko Miyagawa, Seiji Shinohara, Toshio Yoshihara