Patents by Inventor Kohei Yano

Kohei Yano 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: 9321942
    Abstract: An optical pressure-sensitive adhesive that is for use in pressure-sensitive adhesive attached optical films, includes an acrylic copolymer and is less likely to cause display unevenness in the peripheral portion of a display screen. An optical pressure-sensitive adhesive, comprising: an acrylic copolymer containing alkyl (meth)acrylate (a1) and N-(2-hydroxyethyl)(meth)acrylamide (a2) as a monomer unit.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: April 26, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shinichi Inoue, Masayuki Satake, Kohei Yano
  • Patent number: 9310673
    Abstract: To provide a pellicle having a an adhesive, wherein adhesive residue is decreased at the time of peeling the pellicle from a mask after lithographic exposure and outgassing from the adhesive is suppressed The pellicle according to the present invention is a pellicle comprising a pellicle frame, a tensioned pellicle film placed on one end surface of the pellicle frame and an adhesive applied to the other end surface thereof, in which the adhesive contains a (meth)acrylic alkyl ester copolymer and a silane compound, and the (meth)acrylic alkyl ester copolymer is a copolymer of a (meth)acrylic alkyl ester having an alkyl group of 4 to 14 carbon atoms and a monomer having a functional group reactive to at least either one of an isocyanate group or an epoxy group.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: April 12, 2016
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Kohei Yano, Daiki Yamashita
  • Patent number: 8932710
    Abstract: To provide a pressure-sensitive adhesive optical film that can satisfy durability even when a thin pressure-sensitive adhesive layer is formed. A pressure-sensitive adhesive optical film comprising an optical film and a pressure-sensitive adhesive layer on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed by a pressure-sensitive adhesive, comprising: a (meth)acrylic polymer having a weight average molecular weight of 1,500,000 to 2,800,000; containing, as a monomer component, 3 to 10% by weight of a heterocyclic ring-containing acrylic monomer; 0.5 to 5% by weight of a carboxyl group-containing monomer; 0.05 to 2% by weight of a hydroxyl group-containing monomer; and 83 to 96.45% by weight of an alkyl(meth)acrylate monomer, and a crosslinking agent.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: January 13, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Shinichi Inoue, Kohei Yano, Masayuki Satake, Yutaka Moroishi
  • Patent number: 8771453
    Abstract: There is provided a method for manufacturing a liquid crystal panel comprises the steps of: (Step A1) manufacturing a polarizing film including a laminate composed of a first base film and a polarizing thin layer, the step including: applying a vinyl alcohol-based polymer on a surface of the first base film to form a vinyl alcohol-based polymer thin layer; and wet dyeing the vinyl alcohol-based polymer thin layer after stretching the thin layer together with the first base film to obtain a polarizing thin layer, and (Step B1) adhering the polarizing film without an adhesion layer during storage and transportation at least to one surface of a liquid crystal cell through an adhesion layer in a liquid crystal panel manufacturing process.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: July 8, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Kohei Yano, Minoru Miyatake
  • Publication number: 20140170535
    Abstract: To provide a pellicle having a an adhesive, wherein adhesive residue is decreased at the time of peeling the pellicle from a mask after lithographic exposure and outgassing from the adhesive is suppressed The pellicle according to the present invention is a pellicle comprising a pellicle frame, a tensioned pellicle film placed on one end surface of the pellicle frame and an adhesive applied to the other end surface thereof, in which the adhesive contains a (meth)acrylic alkyl ester copolymer and a silane compound, and the (meth)acrylic alkyl ester copolymer is a copolymer of a (meth)acrylic alkyl ester having an alkyl group of 4 to 14 carbon atoms and a monomer having a functional group reactive to at least either one of an isocyanate group or an epoxy group.
    Type: Application
    Filed: May 18, 2012
    Publication date: June 19, 2014
    Applicant: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Kohei Yano, Daiki Yamashita
  • Patent number: 8399090
    Abstract: This invention provides a pressure-sensitive adhesive composition that exhibits excellent pressure-sensitive adhesive properties after crosslinking treatment, does not cause lifting or lifting upon heat treatment or treatment under high-humidity conditions particularly even in the case of a pressure-sensitive adhesive layer having a reduced layer thickness, and has excellent durability. A pressure-sensitive adhesive layer formed using the pressure-sensitive adhesive composition, and a process for producing the same are also provided. Further, an optical member with pressure-sensitive adhesive comprising the pressure-sensitive adhesive layer and an image display using the same are provided. The pressure-sensitive adhesive composition is characterized by comprising 100 parts by weight of an (meth)acrylic polymer and 0.02 to 2 parts by weight of a peroxide, and 0.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: March 19, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Kohei Yano, Shinichi Inoue, Masayuki Satake, Yutaka Moroishi, Fumiko Nakano
  • Patent number: 8389611
    Abstract: An object of the present invention is to provide a pressure sensitive adhesive composition for an optical member, which is excellent in coating property because of low viscosity, can reduce an amount of an organic solvent used, and can form a pressure sensitive adhesive layer excellent in durability and having high surface uniformity.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: March 5, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Fumiaki Shirafuji, Masayuki Satake, Kohei Yano, Yutaka Moroishi, Fumiko Nakano
  • Patent number: 8372492
    Abstract: A pressure-sensitive adhesive optical film of the present invention comprises: an optical film comprising a transparent base film and a discotic liquid crystal layer on one side of the transparent base film; and a pressure-sensitive adhesive layer that is provided on the discotic liquid crystal layer, wherein the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive containing an acrylic polymer comprising an alkyl(meth)acrylate (a1) and a ring structure-containing (meth)acrylate (a2) as monomer units and having a weight average molecular weight of 1,000,000 to 3,000,000, and a crosslinking agent. The pressure-sensitive adhesive optical film has durability and can be prevented from causing display unevenness in a peripheral portion of a display screen.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: February 12, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Kohei Yano, Akiko Ogasawara, Tsuyoshi Chiba, Yuusuke Toyama, Shinichi Inoue, Masayuki Satake
  • Publication number: 20110192529
    Abstract: There is provided a method for manufacturing a liquid crystal panel comprises the steps of: (Step A1) manufacturing a polarizing film including a laminate composed of a first base film and a polarizing thin layer, the step including: applying a vinyl alcohol-based polymer on a surface of the first base film to form a vinyl alcohol-based polymer thin layer; and wet dyeing the vinyl alcohol-based polymer thin layer after stretching the thin layer together with the first base film to obtain a polarizing thin layer, and (Step B1) adhering the polarizing film without an adhesion layer during storage and transportation at least to one surface of a liquid crystal cell through an adhesion layer in a liquid crystal panel manufacturing process.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 11, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kohei Yano, Minoru Miyatake
  • Patent number: 7976952
    Abstract: To provide a pressure-sensitive adhesive sheet used during processing articles such as semiconductor wafers and laminate sheet used for such a pressure-sensitive adhesive sheet, which does not contaminate or break the semiconductor wafers during the processing and can minimize the curl of the articles due to residual stress of the pressure-sensitive adhesive sheet, a multi-layer sheet includes a composite film containing a urethane polymer and a vinyl-based polymer as effective components and a first film made of a material different from that of the composite film, wherein the urethane polymer is formed from a polyolefin diol and a polyisocyanate. A pressure-sensitive adhesive sheet is obtained by providing a pressure-sensitive adhesive layer on at least one side of the multi-layer sheet.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: July 12, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Yoshinori Yoshida, Kouji Akazawa, Tomohiro Kontani, Kohei Yano
  • Patent number: 7939604
    Abstract: Provided are a pressure sensitive adhesive composition for optical members and a pressure sensitive adhesive composition for optical members. The pressure sensitive adhesive composition for optical members according to the present invention comprises 100 parts by weight of an acrylic polymer (A) having a weight-average molecular weight of 500,000 or more, containing at least 50 wt % alkyl (meth)acrylate having an alkyl group with 5 or more carbon atoms and 0.2 to 2 wt % unsaturated carboxylic acid as the monomer unit, 0.1 to 4 parts by weight of an acrylic polymer (B) having a weight-average molecular weight of 2,000 to 50,000, containing at least 70 wt % alkyl (meth)acrylate and 1 to 7 wt % unsaturated carboxylic acid as the monomer unit and having a higher carboxylic acid equivalent than that of the acrylic polymer (A), 0.01 to 1 part by weight of a silane coupling agent, and a crosslinking agent.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Moroishi, Fumiko Nakano, Tetsuo Inoue, Yoshihide Kawaguchi, Kohei Yano
  • Publication number: 20090104445
    Abstract: An object of the invention is to provide an optical pressure-sensitive adhesive that is for use in pressure-sensitive adhesive attached optical films and so on, includes an acrylic copolymer and is less likely to cause display unevenness in the peripheral portion of a display screen. An optical pressure-sensitive adhesive, comprising: an acrylic copolymer containing alkyl (meth)acrylate (a1) and N-(2-hydroxyethyl)(meth)acrylamide (a2) as a monomer unit.
    Type: Application
    Filed: March 14, 2007
    Publication date: April 23, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shinichi Inoue, Masayuki Satake, Kohei YANO
  • Publication number: 20090087650
    Abstract: To provide a pressure-sensitive adhesive optical film that can satisfy durability even when a thin pressure-sensitive adhesive layer is formed. A pressure-sensitive adhesive optical film comprising an optical film and a pressure-sensitive adhesive layer on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed by a pressure-sensitive adhesive, comprising: a (meth)acrylic polymer having a weight average molecular weight of 1,500,000 to 2,800,000; containing, as a monomer component, 3 to 10% by weight of a heterocyclic ring-containing acrylic monomer; 0.5 to 5% by weight of a carboxyl group-containing monomer; 0.05 to 2% by weight of a hydroxyl group-containing monomer; and 83 to 96.45% by weight of an alkyl(meth)acrylate monomer, and a crosslinking agent.
    Type: Application
    Filed: March 13, 2007
    Publication date: April 2, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shinichi Inoue, Kohei Yano, Masayuki Satake, Yutaka Moroishi
  • Publication number: 20090042004
    Abstract: This invention provides a pressure-sensitive adhesive composition that exhibits excellent pressure-sensitive adhesive properties after crosslinking treatment, does not cause lifting or lifting upon heat treatment or treatment under high-humidity conditions particularly even in the case of a pressure-sensitive adhesive layer having a reduced layer thickness, and has excellent durability. A pressure-sensitive adhesive layer formed using the pressure-sensitive adhesive composition, and a process for producing the same are also provided. Further, an optical member with pressure-sensitive adhesive comprising the pressure-sensitive adhesive layer and an image display using the same are provided. The pressure-sensitive adhesive composition is characterized by comprising 100 parts by weight of an (meth)acrylic polymer and 0.02 to 2 parts by weight of a peroxide, and 0.
    Type: Application
    Filed: October 17, 2006
    Publication date: February 12, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kohei Yano, Shinichi Inoue, Masayuki Satake, Yutaka Moroishi, Fumiko Nakano
  • Publication number: 20090023869
    Abstract: An object of the present invention is to provide a pressure sensitive adhesive composition for an optical member, which is excellent in coating property because of low viscosity, can reduce an amount of an organic solvent used, and can form a pressure sensitive adhesive layer excellent in durability and having high surface uniformity.
    Type: Application
    Filed: January 10, 2006
    Publication date: January 22, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Fumiaki Shirafuji, Masayuki Satake, Kohei Yano, Yutaka Moroishi, Fumiko Nakano
  • Publication number: 20080278672
    Abstract: A pressure-sensitive adhesive optical film of the present invention comprises: an optical film comprising a transparent base film and a discotic liquid crystal layer provided on one side of the transparent base film; an undercoat layer; and a pressure-sensitive adhesive layer provided on the discotic liquid crystal layer with the undercoat layer interposed therebetween, the undercoat layer comprises a polymer and an antioxidant; and the pressure-sensitive adhesive layer comprises a (meth)acrylic polymer (A) comprising 80 to 99.5% by weight of an alkyl (meth)acrylate monomer unit and 0.05 to 3% by weight of a hydroxyl group-containing monomer unit and having a weight average molecular weight of 1,000,000 to 2,500,000; a (meth)acrylic oligomer (B) comprising 80 to 99.9% by weight of an alkyl (meth)acrylate monomer unit and 0.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 13, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kohei YANO, Akiko SUGINO, Tsuyoshi CHIBA, Masayuki SATAKE, Kayo OOHIRA
  • Publication number: 20080280074
    Abstract: A pressure-sensitive adhesive optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer laminated on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive containing a (meth)acrylic polymer (A) and a resin component (B) having an aromatic ring structure in its main chain. The pressure-sensitive adhesive optical film has durability and can be prevented from causing display unevenness in a peripheral portion of a display screen.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 13, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akiko SUGINO, Kohei YANO, Tsuyoshi CHIBA, Masayuki SATAKE
  • Publication number: 20080213585
    Abstract: Provided are a pressure sensitive adhesive composition for optical members and a pressure sensitive adhesive composition for optical members. The pressure sensitive adhesive composition for optical members according to the present invention comprises 100 parts by weight of an acrylic polymer (A) having a weight-average molecular weight of 500,000 or more, containing at least 50 wt % alkyl (meth)acrylate having an alkyl group with 5 or more carbon atoms and 0.2 to 2 wt % unsaturated carboxylic acid as the monomer unit, 0.1 to 4 parts by weight of an acrylic polymer (B) having a weight-average molecular weight of 2,000 to 50,000, containing at least 70 wt % alkyl (meth)acrylate and 1 to 7 wt % unsaturated carboxylic acid as the monomer unit and having a higher carboxylic acid equivalent than that of the acrylic polymer (A), 0.01 to 1 part by weight of a silane coupling agent, and a crosslinking agent.
    Type: Application
    Filed: April 24, 2008
    Publication date: September 4, 2008
    Inventors: Yutaka Moroishi, Fumiko Nakano, Tetsuo Inoue, Yoshihide Kawaguchi, Kohei Yano
  • Publication number: 20080145572
    Abstract: A pressure-sensitive adhesive optical film of the present invention comprises: an optical film comprising a transparent base film and a discotic liquid crystal layer on one side of the transparent base film; and a pressure-sensitive adhesive layer that is provided on the discotic liquid crystal layer, wherein the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive containing an acrylic polymer comprising an alkyl(meth)acrylate (a1) and a ring structure-containing (meth)acrylate (a2) as monomer units and having a weight average molecular weight of 1,000,000 to 3,000,000, and a crosslinking agent. The pressure-sensitive adhesive optical film has durability and can be prevented from causing display unevenness in a peripheral portion of a display screen.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 19, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kohei YANO, Akiko OGASAWARA, Tsuyoshi CHIBA, Yuusuke TOYAMA, Shinichi INOUE, Masayuki SATAKE
  • Patent number: 7385007
    Abstract: The present invention provides a pressure sensitive adhesive composition for optical members, which is excellent in durability, re-releasability and stress relaxation, as well as a pressure sensitive adhesive composition for optical members, which hardly increases adhesion after storage for a long time and does not leave a residual adhesive on glass upon disposal or repair. The pressure sensitive adhesive composition for optical members according to the present invention comprises 100 parts by weight of an acrylic polymer (A) having a weight-average molecular weight of 500,000 or more, containing at least 50 wt % alkyl (meth)acrylate having an alkyl group with 5 or more carbon atoms and 0.2 to 2 wt % unsaturated carboxylic acid as the monomer unit, 0.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: June 10, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Moroishi, Fumiko Nakano, Tetsuo Inoue, Yoshihide Kawaguchi, Kohei Yano