Patents by Inventor Seiji Nushi

Seiji Nushi 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).

  • Methacrylic acid ester polymer, method for producing same, active energy ray-curable composition, and optical recording medium
    Patent number: 10927198
    Abstract: A cured product that is reduced in warping and has high hardness can be obtained from an active energy ray-curable resin composition which uses a methacrylic acid ester polymer that has an acid value of 50 mg KOH/g or less and a transition metal content of 1 ppm or less, while containing 80% by mole or more of a polymer that has a double bond-terminated structure represented by formula (1). (In formula (1), R represents an alkyl group, a cycloalkyl group or an aryl group.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 23, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shinichirou Izumi, Mitsuhiro Matsuo, Masahiko Morooka, Kazuyoshi Odaka, Seiji Nushi, Kana Akeda, Eri Kawai
  • METHACRYLIC ACID ESTER POLYMER, METHOD FOR PRODUCING SAME, ACTIVE ENERGY RAY-CURABLE COMPOSITION, AND OPTICAL RECORDING MEDIUM
    Publication number: 20140349129
    Abstract: A cured product that is reduced in warping and has high hardness can be obtained from an active energy ray-curable resin composition which uses a methacrylic acid ester polymer that has an acid value of 50 mg KOH/g or less and a transition metal content of 1 ppm or less, while containing 80% by mole or more of a polymer that has a double bond-terminated structure represented by formula (1). (In formula (1), R represents an alkyl group, a cycloalkyl group or an aryl group.
    Type: Application
    Filed: December 14, 2012
    Publication date: November 27, 2014
    Applicant: Mitsubishi Rayon Co.,Ltd.
    Inventors: Shinichirou Izumi, Mitsuhiro Matsuo, Masahiko Morooka, Kazuyoshi Odaka, Seiji Nushi, Kana Akeda, Eri Kawai
  • Active energy ray curable composition for coating optical disk and optical disk
    Patent number: 7344768
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: March 18, 2008
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Active energy ray curable composition for coating optical disk and optical disk
    Patent number: 7341771
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: March 11, 2008
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Active energy ray curable composition for coating optical disk and optical disk
    Patent number: 7132460
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: November 7, 2006
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Active energy ray curable composition for coating optical disk and optical disk
    Publication number: 20060166140
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane(meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane(meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Application
    Filed: March 27, 2006
    Publication date: July 27, 2006
    Applicant: Mitsubishi Rayon Co., Limited
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Active energy ray curable composition for coating optical disk and optical disk
    Publication number: 20060167200
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Application
    Filed: March 27, 2006
    Publication date: July 27, 2006
    Applicant: Mitsubishi Rayon Co., Limited
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Crosslinked fine particles and curable resin composition
    Publication number: 20040039143
    Abstract: Crosslinked fine particles having a Tg of 100° C. or higher and an amount of remaining double bonds of 0.01 mmol/g or more, which are obtainable by polymerizing a compound (a1) having one or two radical-polymerizable ethylenic unsaturated groups in the molecule and a compound (a2) having three or more (meth)acryloyl groups in the molecule.
    Type: Application
    Filed: July 23, 2003
    Publication date: February 26, 2004
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Seiji Nushi, Hiroshi Fukushima
  • Active energy ray curable composition for coating optical disk and optical disk
    Publication number: 20040013976
    Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.
    Type: Application
    Filed: May 30, 2003
    Publication date: January 22, 2004
    Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
  • Crosslinked fine particles and curable resin composition
    Patent number: 6620887
    Abstract: Crosslinked fine particles having a Tg of 100° C. or higher and an amount of remaining double bonds of 0.01 mmol/g or more, which are obtainable by polymerizing a compound (a1) having one or two radical-polymerizable ethylenic unsaturated groups in the molecule and a compound (a2) having three or more (meth)acryloyl groups in the molecule.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: September 16, 2003
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Seiji Nushi, Hiroshi Fukushima
  • Crosslinked fine particles and curable resin composition
    Publication number: 20030054170
    Abstract: Crosslinked fine particles having a Tg of 100° C. or higher and an amount of remaining double bonds of 0.01 mmol/g or more, which are obtainable by polymerizing a compound (a1) having one or two radical-polymerizable ethylenic unsaturated groups in the molecule and a compound (a2) having three or more (meth)acryloyl groups in the molecule.
    Type: Application
    Filed: June 25, 2001
    Publication date: March 20, 2003
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Juichi Fujimoto, Seiji Nushi, Hiroshi Fukushima