Patents by Inventor Ryuta Ooka

Ryuta Ooka 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).

  • Patent number: 9429685
    Abstract: The laminate of an embodiment is a laminate including an antireflection film and a protection film bonded onto the antireflection film, wherein the surface of the antireflection film includes a plurality of protrusions; the protection film includes a supporting film and an adhesive layer; the adhesive layer includes an adhesive agent, a copolymer, and a carboxyl group-containing monomer; the weight average molecular weight of the copolymer is 1000000 or more and 2000000 or less; the copolymer includes the (meth)acrylic acid alkyl ester with the alkyl group having 4 or less carbon atoms in the largest weight proportion among the monomer components; the acid number of the copolymer is 16 mg KOH/g or more and 120 mg KOH/g or less; and the mixing amount of the epoxy cross-linking agent in relation to 100 parts by weight of the copolymer is 1.5 parts by weight or more.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: August 30, 2016
    Assignees: Sharp Kabushiki Kaisha, Soken Chemical & Engineering Co., Ltd.
    Inventors: Kiyoshi Minoura, Takao Imaoku, Tokio Taguchi, Seiichi Shimizu, Ryuta Ooka
  • Publication number: 20130057958
    Abstract: The laminate of an embodiment is a laminate including an antireflection film and a protection film bonded onto the antireflection film, wherein the surface of the antireflection film includes a plurality of protrusions; the protection film includes a supporting film and an adhesive layer; the adhesive layer includes an adhesive agent, a copolymer, and a carboxyl group-containing monomer; the weight average molecular weight of the copolymer is 1000000 or more and 2000000 or less; the copolymer includes the (meth)acrylic acid alkyl ester with the alkyl group having 4 or less carbon atoms in the largest weight proportion among the monomer components; the acid number of the copolymer is 16 mg KOH/g or more and 120 mg KOH/g or less; and the mixing amount of the epoxy cross-linking agent in relation to 100 parts by weight of the copolymer is 1.5 parts by weight or more.
    Type: Application
    Filed: April 6, 2011
    Publication date: March 7, 2013
    Applicants: SOKEN CHEMICAL & ENGINEERING CO., LTD., SHARP KABUSHIKI KAISHA
    Inventors: Kiyoshi Minoura, Takao Imaoku, Tokio Taguchi, Seiichi Shimizu, Ryuta Ooka