Patents by Inventor Katsura Horikoshi

Katsura Horikoshi 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).

  • Process for producing epoxy compound
    Patent number: 8664414
    Abstract: According to the present invention, a process for producing an epoxy compound, where an epoxy compound can be selectively produced from olefins with good yield at low cost in a safe manner by a simple operation under mild conditions without using a quaternary ammonium salt or a metal compound, is provided. The present invention relates to a process for producing an epoxy compound, comprising epoxidizing a carbon-carbon double bond of an organic compound having a carbon-carbon double bond by using hydrogen peroxide as an oxidant, wherein the epoxidation is carried by out using an organic nitrile compound and an organic amine compound.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 4, 2014
    Assignee: Showa Denko K.K.
    Inventors: Nobuyuki Nagato, Hiroshi Uchida, Katsura Horikoshi, Mitsuhiro Imaizumi
  • Carbon fiber-reinforced resin composite materials
    Patent number: 7585558
    Abstract: The present invention discloses: a composition comprising (A) an epoxy group-containing vinyl ester resin having, in the molecule, 0.8 to 0.3 equivalent of epoxy group and 0.2 to 0.7 equivalent of an ethylenically unsaturated group, (B) a radical-polymerizable monomer, (C) a curing agent, and (D) a carbon fiber impregnated with 0.5 to 5% by mass of (d) a vinyl ester resin as a sizing agent, obtained by an addition reaction of an epoxy resin and an ethylenically unsaturated carboxylic acid, and a carbon fiber-reinforced resin composite material produced by curing the above composition.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: September 8, 2009
    Assignees: Toho Tenax Co., Ltd., Showa Highpolymer Co., Ltd.
    Inventors: Yoshinori Suzuki, Yutaka Miura, Katsura Horikoshi, Mitsuhiro Yada
  • Carbon fiber-reinforced resin composite materials
    Publication number: 20060154039
    Abstract: The present invention discloses: a composition comprising (A) an epoxy group-containing vinyl ester resin having, in the molecule, 0.8 to 0.3 equivalent of epoxy group and 0.2 to 0.7 equivalent of an ethylenically unsaturated group, (B) a radical-polymerizable monomer, (C) a curing agent, and (D) a carbon fiber impregnated with 0.5 to 5% by mass of (d) a vinyl ester resin as a sizing agent, obtained by an addition reaction of an epoxy resin and an ethylenically unsaturated carboxylic acid, and a carbon fiber-reinforced resin composite material produced by curing the above composition.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 13, 2006
    Applicants: TOHO TENAX CO., LTD, SHOWA HIGHPLOYMER CO., LTD.
    Inventors: Yoshinori Suzuki, Yutaka Miura, Katsura Horikoshi, Mitsuhiro Yada