Patents by Inventor Daigoro Nakagawa

Daigoro Nakagawa 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: 20180267211
    Abstract: There is provided a polarizer protective film excellent in both bending resistance and adhesiveness with a polarizer. A polarizer protective film according to an embodiment of the present invention includes: an acrylic resin; and reinforcing particles dispersed in the acrylic resin. The reinforcing particles have flat shapes, and have a length-to-thickness ratio of 7.0 or less.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 20, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Nobuyuki Haida, Shintaro Azuma, Masayuki Okamoto, Tetsuro Ikeda, Daigoro Nakagawa
  • Publication number: 20180170704
    Abstract: Provided is a method for conveying a sheet member while the sheet member is supported by a roller member, the method including: detecting forces applied, by the sheet member supported by the roller member, to regions at both ends in a width direction of the roller member, respectively, as force components in a plurality of mutually different directions; and adjusting the force components in the regions at both ends in the width direction to a specific balance based on the detection results for the plurality of force components.
    Type: Application
    Filed: May 2, 2016
    Publication date: June 21, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Minoru Yagi, Sonjin Ryu, Hirofumi Nomoto, Koji Fujii, Daigoro Nakagawa
  • Patent number: 9354372
    Abstract: An optical laminate in which a polarizing film including a polyvinyl alcohol-based resin having oriented iodine is bonded on a first surface of the polarizing film to an optical film through an optically transparent adhesive layer is provided. The polarizing film exhibits a property that a value expressed by the following formula: Aa×(Is/Ia), is 0.53 or more, where: Aa represents an absorbance; Ia represents a value obtained by integrating a distribution of integrated intensities in the thickness direction of the polarizing film; and Is represents a value obtained by integrating, a distribution of integrated intensities in the thickness direction of the polarizing film; and the adhesive layer exhibits a property that a difference between a refractive index of the adhesive layer and a refractive index in the absorption axis direction of the polarizing film at the first surface of the polarizing film is 0.08 or less.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: May 31, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takashi Kamijo, Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Daigoro Nakagawa
  • Publication number: 20150316696
    Abstract: An optical laminate in which a polarizing film including a polyvinyl alcohol-based resin having oriented iodine is bonded on a first surface of the polarizing film to an optical film through an optically transparent adhesive layer is provided. The polarizing film exhibits a property that a value expressed by the following formula: Aa×(Is/Ia), is 0.53 or more, where: Aa represents an absorbance; Ia represents a value obtained by integrating a distribution of integrated intensities in the thickness direction of the polarizing film; and Is represents a value obtained by integrating, a distribution of integrated intensities in the thickness direction of the polarizing film; and the adhesive layer exhibits a property that a difference between a refractive index of the adhesive layer and a refractive index in the absorption axis direction of the polarizing film at the first surface of the polarizing film is 0.08 or less.
    Type: Application
    Filed: February 6, 2014
    Publication date: November 5, 2015
    Inventors: Takashi KAMIJO, Akinori IZAKI, Takeharu KITAGAWA, Shusaku GOTO, Daigoro NAKAGAWA
  • Publication number: 20130194221
    Abstract: A resin film with pressure-sensitive adhesive layer of the invention includes a first transparent resin film, an oligomer blocking layer, and a pressure-sensitive adhesive layer laminated in this order, wherein the oligomer blocking layer is a cured layer formed by curing a composition containing a curable compound and inorganic oxide particles, the oligomer blocking layer has a thickness of 120 nm or more, the oligomer blocking layer has a refractive index difference of 0.04 or less from the pressure-sensitive adhesive layer, and an anchoring strength between the oligomer blocking layer and the pressure-sensitive adhesive layer is 1 N/25 mm or more. The resin film with pressure-sensitive adhesive layer can prevents the oligomer blocking layer from causing interference fringes, in which even when made thin, the oligomer blocking layer satisfies the requirements including oligomer blocking properties and scratch resistance, and also has good adhesion to the pressure-sensitive adhesive layer.
    Type: Application
    Filed: September 28, 2011
    Publication date: August 1, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Daigoro Nakagawa, Hiroyuki Takao, Takayuki Adachi, Hiroki Kuramoto
  • Publication number: 20130186548
    Abstract: A process including (1) applying a solution composition to one or both sides of a first transparent resin film to form a coating layer or layers, wherein the solution composition contains an active energy ray-curable compound, a photopolymerization initiator, and a solvent, wherein the photopolymerization initiator has a 10% weight loss temperature of 170° C. or more as measured by a loss-on-heating test; (2) removing, after the coating step (1), a solvent from the coating layer or layers by drying under such temperature conditions that the first laminated film obtained has a thermal shrinkage of 0.5% or less when heated at 150° C. for 1 hour, and (3) curing the coating layer or layers after the heat-treating step (2). A second laminated film produced with the first laminated film makes it possible to suppress curling and to prevent oligomer precipitation.
    Type: Application
    Filed: September 28, 2011
    Publication date: July 25, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroyuki Takao, Katsunori Takada, Daigoro Nakagawa, Hiroki Ozawa