Patents by Inventor Takahiro Yatagai

Takahiro Yatagai 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: 8298660
    Abstract: The present invention provides a flame-retardant polyolefin resin composition having superior molding processability, a resistance to thermal deformation and suitable stretchability and intensity, which is rich in elastic deformation. The present invention provides a flame-retardant polyolefin resin composition comprising component A (a thermoplastic resin having a carbonyl oxygen atom in the molecular skeleton), component B (a polymer alloy containing an ethylene component and a propylene component), component C: a modified polyolefin polymer containing an acidic functional group and having a weight average molecular weight of 10,000-80,000 and component D (an inorganic metal compound), and substantially free of a halogen atom.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: October 30, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Shigeki Ishiguro, Takahiro Yatagai, Tomohito Harada
  • Patent number: 8058341
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains an acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type and at least one hydrophilic polymer selected from the group consisting of polyalkylene glycols, polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid), the amount of the hydrophilic polymer being from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type, and a pressure-sensitive adhesive product has a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: November 15, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
  • Patent number: 7851531
    Abstract: An aqueous pressure-sensitive adhesive composition of the invention comprises a rubber-based latex and a tackifier resin emulsion, wherein the tackifier resin emulsion is that obtained by emulsifying a tackifier resin in the presence of an emulsifier containing an ammonium salt of rosins; and the aqueous pressure-sensitive adhesive composition contains a water-soluble salt of casein as protective colloid. The aqueous pressure-sensitive adhesive composition is excellent in mechanical stability and insulating characteristics and has good moisture-proof adhesive strength.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: December 14, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Takahiro Yatagai, Masato Shirai, Masanori Myoujin
  • Publication number: 20100286320
    Abstract: The present invention provides a flame-retardant polyolefin resin composition having superior molding processability, a resistance to thermal deformation and suitable stretchability and intensity, which is rich in elastic deformation. The present invention provides a flame-retardant polyolefin resin composition comprising component A (a thermoplastic resin having a carbonyl oxygen atom in the molecular skeleton), component B (a polymer alloy containing an ethylene component and a propylene component), component C: a modified polyolefin polymer containing an acidic functional group and having a weight average molecular weight of 10,000-80,000 and component D (an inorganic metal compound), and substantially free of a halogen atom.
    Type: Application
    Filed: April 8, 2008
    Publication date: November 11, 2010
    Inventors: Shigeki ISHIGURO, Takahiro YATAGAI, Tomohito HARADA
  • Publication number: 20090186221
    Abstract: The present invention provides an aqueous-dispersion-type pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet formed thereof. This composition comprises a rubber latex, a tackifier resin emulsion, a dispersant composed primarily of a polycarboxylic acid (salt) having a hydrophobic side chain, and an emulsifier composed primarily of a polyoxyethylene alkyl ether sulfuric acid ester having an average polymerization degree of 16 to 80. A preferred dispersant contains carboxyl group at 2 to 6 mmol/g and an aqueous solution thereof at 1% by mass has a surface tension of 25 to 45 mN/m.
    Type: Application
    Filed: January 19, 2009
    Publication date: July 23, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro YATAGAI, Masanori MYOJIN, Hideki NAGATSU, Kenichi OKADA
  • Patent number: 7396868
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains a polyalkylene glycol having a weight-average molecular weight of from 20,000 to 5,000,000 or at least one hydrophilic polymer selected from the group consisting of polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid) in an amount of from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type; and a pressure-sensitive adhesive product contains a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: July 8, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
  • Publication number: 20070167546
    Abstract: An aqueous pressure-sensitive adhesive composition of the invention comprises a rubber-based latex and a tackifier resin emulsion, wherein the tackifier resin emulsion is that obtained by emulsifying a tackifier resin in the presence of an emulsifier containing an ammonium salt of rosins; and the aqueous pressure-sensitive adhesive composition contains a water-soluble salt of casein as protective colloid. The aqueous pressure-sensitive adhesive composition is excellent in mechanical stability and insulating characteristics and has good moisture-proof adhesive strength.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 19, 2007
    Inventors: Takahiro Yatagai, Masato Shirai, Masanori Myoujin
  • Publication number: 20060266380
    Abstract: According to the present invention, of the both surfaces of a cleaning sheet, a contact face to be rubbed against a cleaning object is a concave convex plane containing a convex part 1 and a concave part 2. By rubbing this concave convex plane against a cleaning object, a removal target (e.g., paste accumulated on the back of screen printing plate) attached to a cleaning object can be effectively removed.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Inventors: Eiji Yamanaka, Masanobu Yoneda, Takahiro Yatagai, Osamu Degawa
  • Publication number: 20060029796
    Abstract: Novel glycosylated intracellular IL-1 receptor antagonist type II (icIL-1ra-II) is expressed and secreted in mammalian cells transformed with an expression vector where icIL-1ra-II is secreted by expressing icIL-1ra-II fused to the human growth hormone signal peptide. Also disclosed are a pharmaceutical composition containing glycosylated icIL-1ra-II as an active ingredient and a method for reducing IL-1 levels in patients having a condition involving overexpressed IL-1.
    Type: Application
    Filed: July 29, 2005
    Publication date: February 9, 2006
    Inventors: Hiroichi Ukei, Takahiro Yatagai, Hideki Nagatsu
  • Publication number: 20050075444
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains a polyalkylene glycol having a weight-average molecular weight of from 20,000 to 5,000,000 or at least one hydrophilic polymer selected from the group consisting of polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid) in an amount of from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type; and a pressure-sensitive adhesive product contains a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Application
    Filed: July 11, 2003
    Publication date: April 7, 2005
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
  • Publication number: 20050058829
    Abstract: A pressure-sensitive adhesive tape has a supporting substrate made of a plastic film and a pressure-sensitive adhesive layer formed on at least one side of the supporting substrate, an uneven portion having a shape extending in the vertical direction against the longitudinal direction being disposed on one side of the supporting substrate, wherein a maximum stress at an elongation of not more than 50% is larger than a stress at break, and an elongation at break is from 100 to 300%.
    Type: Application
    Filed: September 16, 2003
    Publication date: March 17, 2005
    Inventors: Hiroichi Ukei, Takahiro Yatagai, Hideki Nagatsu, Masayoshi Natsume, Yoshio Nakagawa
  • Publication number: 20030162886
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains an acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type and at least one hydrophilic polymer selected from the group consisting of polyalkylene glycols, polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid), the amount of the hydrophilic polymer being from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type, and a pressure-sensitive adhesive product has a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 28, 2003
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai