Patents by Inventor Masatsugu Higashi

Masatsugu Higashi 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: 20190292414
    Abstract: A resin composition characterized by including a (meth)acrylic polymer having a Tg of ?40° C. or lower obtained by polymerizing a monomer component including an alkyl (meth)acrylate (a1), the Tg of a homopolymer of which is ?50° C. or lower, that has a C8-18 branched alkyl group at the end of the ester group and a (meth)acrylate (a2), the Tg of a homopolymer of which is ?40° C. or lower, that has an ether bond within the molecular skeleton. The resin composition can achieve both high adhesive strength and high holding power to an adherend having a rough surface.
    Type: Application
    Filed: June 9, 2017
    Publication date: September 26, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu HIGASHI, Yutaka TOSAKI
  • Patent number: 10308844
    Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 19 to 99.5% by weight of an alkyl (meth)acrylate having a branched alkyl group of 10 to 24 carbon atoms at an ester end. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: June 4, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Akiko Tanaka, Aimi Matsuura, Kiyoe Shigetomi, Tetsuo Inoue
  • Patent number: 9657197
    Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 23, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Kiyoe Shigetomi, Koji Shitara, Akiko Tanaka, Katsuhiko Kamiya, Azusa Iseki
  • Publication number: 20170002235
    Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 5, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu HIGASHI, Kiyoe SHIGETOMI, Koji SHITARA, Akiko TANAKA, Katsuhiko KAMIYA, Azusa ISEKI
  • Patent number: 9527944
    Abstract: Provided is a pressure-sensitive adhesive layer for a transparent conductive film having a patterned transparent conductive thin film, which has transparent as the pressure-sensitive adhesive layer for transparent conductive film and can prevent the patterned transparent conductive thin film from degrading the appearance of the conductive film. A pressure-sensitive adhesive layer for a transparent conductive film having a patterned transparent conductive thin film, wherein the pressure-sensitive adhesive layer is made from an acrylic pressure-sensitive adhesive composition containing: 100 parts by weight of an acryl-based polymer obtained by polymerization of a monomer component including an alkyl(meth)acrylate; and 30 to 150 parts by weight of a styrene-based oligomer, the pressure-sensitive adhesive layer has a refractive index of 1.50 or more, the pressure-sensitive adhesive layer has a haze of 2% or less as measured at a thickness of 30 ?m.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 27, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akiko Tanaka, Aimi Matsuura, Katsuhiko Kamiya, Masatsugu Higashi, Mizue Yamasaki
  • Publication number: 20150010754
    Abstract: A pressure-sensitive adhesive of the present invention comprises a (meth)acryl-based polymer obtained by polymerization of a monomer component containing 40 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and more than 0 to 50% by weight or less of an alicyclic structure-containing monomer. The pressure-sensitive adhesive is capable of forming a pressure-sensitive adhesive layer that has a sufficiently low level of dielectric constant and a satisfactory level of adhesion performance.
    Type: Application
    Filed: November 27, 2012
    Publication date: January 8, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Azusa Iseki, Akiko Tanaka, Katsuhiko Kamiya
  • Publication number: 20150004407
    Abstract: The pressure-sensitive adhesive of the invention contains a (meth)acryl-based polymer obtained by polymerization of a monomer component containing 40 to 99.5% by weight of an alkyl (meth)acrylate having a branched alkyl group of 6 to 9 carbon atoms at an ester end and more than 0 to 40% by weight of a cyclic nitrogen-containing monomer having a six or more-membered cyclic nitrogen-containing structure. The pressure-sensitive adhesive of the invention can form a pressure-sensitive adhesive layer having a satisfactory level of adhesion performance and optical properties, a low dielectric constant, and moisture resistance reliability.
    Type: Application
    Filed: November 27, 2012
    Publication date: January 1, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Akiko Tanaka, Aimi Matsuura, Tetsuo Inoue
  • Publication number: 20140370277
    Abstract: The purpose of the present invention is to provide: an adhesive composition for optical applications, which is capable of suppressing luminance unevenness without deteriorating the contrast characteristics in optical applications, and which can be used for optical members and prevents the optical members from separation in a reliability test; an adhesive layer; an optical member; an image display device and the like. An adhesive composition for optical applications, which contains a modified (meth)acrylic graft polymer and an isocyanate crosslinking agent, is prepared. The modified (meth)acrylic graft polymer is obtained by graft polymerizing chains, each of which contains a cyclic ether group-containing monomer, to the trunk polymer, and contains, as constituent components, an alkyl(meth)acrylate, a cyclic ether group-containing monomer, and an acyclic ether group-containing monomer.
    Type: Application
    Filed: August 20, 2012
    Publication date: December 18, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Yutaka Moroishi, Shigeru Fujita, Tetsuo Inoue
  • Publication number: 20140248489
    Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.
    Type: Application
    Filed: September 12, 2012
    Publication date: September 4, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Kiyoe Shigetomi, Koji Shitara, Akiko Tanaka, Katsuhiko Kamiya, Azusa Iseki
  • Patent number: 8743319
    Abstract: A liquid crystal panel of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate and a third polarizing plate placed on another side of the liquid crystal cell in the stated order from a side of the liquid crystal cell; a first retardation plate placed between the liquid crystal cell and the first polarizing plate; and a second retardation plate placed between the liquid crystal cell and the second polarizing plate, in which: refractive index ellipsoids of the first retardation plate and the second retardation plate exhibit a relationship of nx>ny>nz; and a transmittance (T2) of the second polarizing plate is larger than a transmittance (T1) of the first polarizing plate, and a transmittance (T3) of the third polarizing plate is equal to or larger than the transmittance (T1) of the first polarizing plate.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: June 3, 2014
    Assignee: Nitto Denko Corporation
    Inventor: Masatsugu Higashi
  • Publication number: 20140134432
    Abstract: A pressure-sensitive adhesive composition of the invention includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including 25% by weight to 99.5% by weight of a cyclic structure-containing monomer and 0.5% by weight to 70% by weight of a branched structure-containing (meth)acryl-based monomer having a branched alkyl group of 3 to 18 carbon atoms at an ester end. The pressure-sensitive adhesive composition has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant.
    Type: Application
    Filed: June 25, 2012
    Publication date: May 15, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Akiko Tanaka, Aimi Matsuura, Tetsuo Inoue
  • Publication number: 20140093726
    Abstract: Provided is a pressure-sensitive adhesive composition capable of realizing a pressure-sensitive adhesive layer having satisfactory adhesion performance and a low dielectric constant. This pressure-sensitive adhesive composition is characterized by containing a methacrylic polymer with a glass transition temperature (Tg) of 0° C. or less obtained by polymerization of monomer components including 40-99.5 weight % of alkyl methacrylate having a C10-C18 alkyl group in a side chain. A pressure-sensitive adhesive layer and an adhesive sheet are also prepared from the said pressure-sensitive adhesive composition.
    Type: Application
    Filed: June 7, 2012
    Publication date: April 3, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Akiko Tanaka, Aimi Matsuura, Tetsuo Inoue
  • Publication number: 20140065417
    Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 19 to 99.5% by weight of an alkyl (meth)acrylate having a branched alkyl group of 10 to 24 carbon atoms at an ester end. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant.
    Type: Application
    Filed: April 23, 2012
    Publication date: March 6, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Akiko Tanaka, Aimi Matsuura, Kiyoe Shigetomi, Tetsuo Inoue
  • Publication number: 20130251990
    Abstract: A pressure-sensitive adhesive of the invention includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including: an alkyl(meth)acrylate (a1) having a branched alkyl group of 8 to 24 carbon atoms at an ester end; and an alkyl(meth)acrylate (a2) having a linear alkyl group of 8 to 24 carbon atoms at an ester end. The pressure-sensitive adhesive can has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 26, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu HIGASHI, Koji SHITARA, Akiko TANAKA, Katsuhiko KAMIYA
  • Patent number: 8493527
    Abstract: The liquid crystal panel according to an embodiment of the present invention includes a liquid crystal cell, a first polarizing plate placed on one side of the liquid crystal cell, a second polarizing plate and a third polarizing plate placed on the other side of the liquid crystal cell in an order starting from a side of the liquid crystal cell, and a retardation plate (A) placed between the liquid crystal cell and the second polarizing plate, wherein a refractive index ellipsoid of the retardation plate (A) has a relationship of nx?ny>nz, a difference (?T2?1=T2?T1) between a transmittance (T2) of the second polarizing plate and a transmittance (T1) of the first polarizing plate is larger than 0%, a difference (?T3?2=T3?T2) between a transmittance (T3) of the third polarizing plate and a transmittance (T2) of the second polarizing plate is 4.0% to 7.5%, and the third polarizing plate is a linearly polarized light separation type reflective polarizing plate.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 23, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Takaaki Ishii, Masatsugu Higashi, Nao Murakami
  • Publication number: 20130003389
    Abstract: Disclosed is an optical sheet with an adhesive layer, which has excellent adhesion, excellent aggregability and excellent long-term durability, and wherein an adhesive layer part does not fill recesses and projections over time, said recesses and projections having been formed by processing. Specifically, an optical sheet with an adhesive layer is produced by arranging an adhesive layer on a recessed and projected surface of an optical film which has been subjected to processing for forming recesses and projections. In addition, the optical sheet with an adhesive layer is bonded to various light sources or image display elements, thereby obtaining light sources or image display devices that have improved light extraction efficiency without changing the designs of the light sources or image display elements, while securing uniform light emission and improving viewing angles especially in devices that comprises the image display elements.
    Type: Application
    Filed: March 14, 2011
    Publication date: January 3, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yutaka Moroishi, Masatsugu Higashi, Shigeru Fujita, Fumiko Nakano, Tetsuo Inoue, Akiko Tanaka, Aimi Matsuura
  • Patent number: 8269928
    Abstract: The present invention provides a polarizing plate that includes: a transparent protective film; a polarizer; and an optical compensation layer. The transparent protective film, the polarizer, and the optical compensation layer are laminated in this order. A moisture percentage of the polarizing plate is 2.8% by mass or less. The optical compensation layer includes a retardation film. The retardation film includes at least one resin selected from the group consisting of norbornene resins, cellulose resins, polyvinyl acetal resins, polyimide resins, polyester resins, and polycarbonate resins. The optical compensation layer shows an optical property represented by the following formula (I): nx>ny>nz??(I).
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: September 18, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Masatsugu Higashi, Takashi Kumano, Kazuki Uwada, Nao Murakami
  • Publication number: 20100277675
    Abstract: A polarizing plate in which even slight luminance nonuniformity is provided from occurring is provided. In this polarizing plate 10, a transparent protective film 11, a polarizer 12, and an optical compensation layer 13 are laminated in this order. The moisture permeability of the transparent protective film 11 is different from that of the optical compensation layer 13. The optical compensation layer 13 is a retardation film containing at least one resin selected from norbornene resins, polyvinyl acetal resins, polyester resins, polypropylene resins, polycarbonate resins, and acrylic resins. The moisture content of the polarizing plate 10 is not more than 3%.
    Type: Application
    Filed: October 21, 2008
    Publication date: November 4, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Nao Murakami, Kazuki Uwada, Takashi Kumano
  • Publication number: 20100253892
    Abstract: The present invention provides a polarizing plate that includes: a transparent protective film; a polarizer; and an optical compensation layer. The transparent protective film, the polarizer, and the optical compensation layer are laminated in this order. A moisture percentage of the polarizing plate is 2.8% by mass or less. The optical compensation layer includes a retardation film. The retardation film includes at least one resin selected from the group consisting of norbornene resins, cellulose resins, polyvinyl acetal resins, polyimide resins, polyester resins, and polycarbonate resins. The optical compensation layer shows an optical property represented by the following formula (I): nx>ny>nz ??(I).
    Type: Application
    Filed: April 7, 2010
    Publication date: October 7, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masatsugu Higashi, Takashi Kumano, Kazuki Uwada, Nao Murakami
  • Publication number: 20100171907
    Abstract: A liquid crystal panel of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate and a third polarizing plate placed on another side of the liquid crystal cell in the stated order from a side of the liquid crystal cell; a first retardation plate placed between the liquid crystal cell and the first polarizing plate; and a second retardation plate placed between the liquid crystal cell and the second polarizing plate, in which: refractive index ellipsoids of the first retardation plate and the second retardation plate exhibit a relationship of nx>ny>nz; and a transmittance (T2) of the second polarizing plate is larger than a transmittance (T1) of the first polarizing plate, and a transmittance (T3) of the third polarizing plate is equal to or larger than the transmittance (T1) of the first polarizing plate.
    Type: Application
    Filed: December 14, 2009
    Publication date: July 8, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventor: Masatsugu Higashi