Patents by Inventor Toshitaka Takahasi

Toshitaka Takahasi 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).

  • Aqueous dispersion adhesive composition and adhesive film
    Patent number: 7858709
    Abstract: The aqueous dispersion adhesive composition contains an aqueous dispersion copolymer obtained by reacting of a reaction component containing alkyl (meth)acrylate whose linear or branched alkyl group has 4 to 18 carbon atoms, (meth)acrylic acid, a phosphoric acid group-containing vinyl monomer and an alkoxysilyl group-containing vinyl monomer to react; and a crosslinking agent having reactivity with a carboxyl group. In the aqueous dispersion adhesive composition, an amount of the crosslinking agent is from 0.07 to 4 parts by weight per 100 parts by weight of the aqueous dispersion copolymer, and in an adhesive layer made of the aqueous dispersion adhesive composition, an elongation at 90° C. is 200% or less.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: December 28, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Toshitaka Takahasi, Kenichi Okada, Yousuke Makihata, Kuniaki Inui, Taiki Shimokuri, Mika Okada, Namiko Murayama