Patents by Inventor Toshitaka Yoshitake

Toshitaka Yoshitake 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: 11958931
    Abstract: A flame-retardant urethane resin composition comprises a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and an additive, in which the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt, and the additive comprises red phosphorus and at least one selected from the group consisting of a phosphoric acid ester, a phosphate-containing flame retardant, a bromine-containing flame retardant, a boron-containing flame retardant, an antimony-containing flame retardant, and a metal hydroxide.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: April 16, 2024
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Taichi Makida, Toshitaka Yoshitake, Yousuke Okada, Takehiko Ushimi
  • Publication number: 20200255576
    Abstract: A flame-retardant urethane resin composition comprises a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and an additive, in which the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt, and the additive comprises red phosphorus and at least one selected from the group consisting of a phosphoric acid ester, a phosphate-containing flame retardant, a bromine-containing flame retardant, a boron-containing flame retardant, an antimony-containing flame retardant, and a metal hydroxide.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Taichi Makida, Toshitaka Yoshitake, Yousuke Okada, Takehiko Ushimi
  • Patent number: 10676559
    Abstract: A flame-retardant urethane resin composition comprises a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and an additive, in which the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt, and the additive comprises red phosphorus and at least one selected from the group consisting of a phosphoric acid ester, a phosphate-containing flame retardant, a bromine-containing flame retardant, a boron-containing flame retardant, an antimony-containing flame retardant, and a metal hydroxide.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: June 9, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Taichi Makida, Toshitaka Yoshitake, Yousuke Okada, Takehiko Ushimi
  • Patent number: 10633480
    Abstract: The flame-retardant urethane resin composition contains a polyisocyanate compound, a polyol compound, a trimerization catalyst, a blowing agent, and an additive, wherein the additives include red phosphorus and a filler, and the filler has an aspect ratio of 5 to 50, an average particle diameter of 0.1 ?m or larger, but smaller than 15 ?m, and a melting point of 750° C. or higher.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 28, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yousuke Okada, Kazuhiro Okada, Takehiko Ushimi, Yasunari Kusaka, Toshitaka Yoshitake
  • Patent number: 10287420
    Abstract: A thermally expandable resin composition containing an epoxy resin, a thermally expandable graphite, and an inorganic filler excluding graphite. The epoxy resin contains a bisphenol-type epoxy compound and an aliphatic epoxy compound, wherein the weight ratio of the bisphenol-type epoxy compound to the aliphatic epoxy compound is in the range 95:5-60:40.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 14, 2019
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshitaka Yoshitake, Masaki Tono, Kenji Otsuka, Hideaki Yano
  • Patent number: 9994693
    Abstract: A thermally expandable resin composition containing an epoxy resin, a thermally expandable graphite, and an inorganic filler excluding graphite. The epoxy compound contained in said epoxy resin contains a brominated epoxy compound, and contains, in addition to the brominated epoxy compound, a bisphenol-type epoxy compound and/or an aliphatic epoxy compound, wherein the weight ratio of the brominated epoxy compound to the bisphenol-type epoxy compound and/or aliphatic epoxy compound is in the range 99:1-1:99.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: June 12, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshitaka Yoshitake, Masaki Tono, Kenji Otsuka, Hideaki Yano
  • Publication number: 20170298170
    Abstract: The flame-retardant urethane resin composition contains a polyisocyanate compound, a polyol compound, a trimerization catalyst, a blowing agent, and an additive, wherein the additives include red phosphorus and a filler, and the filler has an aspect ratio of 5 to 50, an average particle diameter of 0.1 ?m or larger, but smaller than 15 ?m, and a melting point of 750° C. or higher.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 19, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yousuke OKADA, Kazuhiro OKADA, Takehiko USHIMI, Yasunari KUSAKA, Toshitaka YOSHITAKE
  • Publication number: 20150322195
    Abstract: A flame-retardant urethane resin composition comprises a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, and an additive, in which the trimerization catalyst is at least one selected from the group consisting of a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and a quaternary ammonium salt, and the additive comprises red phosphorus and at least one selected from the group consisting of a phosphoric acid ester, a phosphate-containing flame retardant, a bromine-containing flame retardant, a boron-containing flame retardant, an antimony-containing flame retardant, and a metal hydroxide.
    Type: Application
    Filed: July 20, 2015
    Publication date: November 12, 2015
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Taichi Makida, Toshitaka Yoshitake, Yousuke Okada, Takehiko Ushimi
  • Publication number: 20150291773
    Abstract: A thermally expandable resin composition containing an epoxy resin, a thermally expandable graphite, and an inorganic filler excluding graphite. The epoxy resin contains a bisphenol-type epoxy compound and an aliphatic epoxy compound, wherein the weight ratio of the bisphenol-type epoxy compound to the aliphatic epoxy compound is in the range 95:5-60:40.
    Type: Application
    Filed: October 10, 2013
    Publication date: October 15, 2015
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshitaka Yoshitake, Masaki Tono, Kenji Otsuka, Hideaki Yano
  • Publication number: 20150284525
    Abstract: A thermally expandable resin composition containing an epoxy resin, a thermally expandable graphite, and an inorganic filler excluding graphite. The epoxy compound contained in said epoxy resin contains a brominated epoxy compound, and contains, in addition to the brominated epoxy compound, a bisphenol-type epoxy compound and/or an aliphatic epoxy compound, wherein the weight ratio of the brominated epoxy compound to the bisphenol-type epoxy compound and/or aliphatic epoxy compound is in the range 99:1-1:99.
    Type: Application
    Filed: October 10, 2013
    Publication date: October 8, 2015
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshitaka Yoshitake, Masaki Tono, Kenji Otsuka, Hideaki Yano
  • Patent number: 8287778
    Abstract: A synthetic resin composition containing, 100 parts by mass of a synthetic resin, 0.001-10 parts by mass of a triazine compound represented by (1) below, and 0.001-10 parts by mass of a diarylpentaerythritol diphosphite compound represented by general formula (2) shown below and/or 0.001-10 parts by mass of an organic cyclic phosphite compound represented by formula (3) below and/or 0.001-10 parts by mass of a hindered phenol compound represented by formula (4) below. In formula (1), R1 is C1-C12 alkyl group, etc.; R2 is C1-C8 alkyl group, etc.; R3 is hydroxyl group, etc.; and R4 is —O—R1, etc. In formula (2), R5 is C1-C4 alkyl group, etc. In formula (3), R6 and R8 is each C1-C4 alkyl group, etc, and R7 is C1-C18 alkyl group. In formula (4), R9 is a residue remaining after removing n hydroxyl groups from a mono- to tetravalent alcohol, and n is an integer 1-4.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: October 16, 2012
    Assignee: Adeka Corporation
    Inventors: Mitsuru Fukushima, Toshitaka Yoshitake, Tetsuo Kamimoto, Toshio Nakajima
  • Publication number: 20110272648
    Abstract: A synthetic resin composition is obtained by mixing, to 100 parts by mass of a synthetic resin, 0.001-10 parts by mass of a triazine-based compound represented by general formula (1), 0.001-10 parts by mass of a diaryl pentaerythritol diphosphite compound represented by general formula (2), and/or 0.001-10 parts by mass of an organic cyclic phosphite compound represented by general formula (3), and/or 0.001-10 parts by mass of a hindered phenolic compound represented by general formula (4). (In formula (1), R1 represents an alkyl group having 1-12 carbon atoms, R2 represents an alkyl group having 1-8 carbon atoms, R3 represents a hydroxy group, and R4 represents —O—R1. In formula (2), R5 represents an alkyl group having 1-4 carbon atoms. In formula (3), R5 and R8 represent an alkyl group having 1-4 carbon atoms, and R7 represents an alkyl group having 1-18 carbon atoms.
    Type: Application
    Filed: February 1, 2010
    Publication date: November 10, 2011
    Applicant: ADEKA CORPORATION
    Inventors: Mitsuru Fukushima, Toshitaka Yoshitake, Tetsuo Kamimoto, Toshio Nakajima