Patents by Inventor Sadayuki Kobayashi

Sadayuki Kobayashi 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: 11529766
    Abstract: A hollow molded article having a joining site where two or more split objects are welded by plastic welding and comes into contact with pressurized hydrogen, wherein an average spherulite size in a portion which is 500 ?m deep inside from a surface of the hollow molded article is 20 ?m or less, and a tensile strength of a test piece containing the joining site of the hollow molded article is 80% or more based on a tensile strength of a test piece not containing the joining site of the hollow molded article.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: December 20, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Patent number: 11505661
    Abstract: There are provided a fiber reinforced thermoplastic resin molded article including a thermoplastic resin [A], carbon fibers [B] and a polyrotaxane [C], the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C] being included in amounts of 40 to 98 parts by weight, 1 to 40 parts by weight and 1 to 20 parts by weight, respectively, based on 100 parts by weight of the total content of the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C], wherein the carbon fibers [B] included in the molded article have a weight-average fiber length [Lw] in a range of 0.5 to 20 mm, and a ratio ([C]/[B]) of the content of the polyrotaxane [C] to that of the carbon fibers [B] is 0.04 or more and 0.5 or less; and a thermoplastic resin molded article which has excellent impact strength and also has excellent conductivity.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 22, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shin Hirata, Sadayuki Kobayashi, Keiichiro Nomura
  • Patent number: 11261326
    Abstract: A polyamide resin composition for an extrusion-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260° C. and a take-up speed at strand break of 30 m/min or more when measured at 260° C.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: March 1, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Patent number: 11111384
    Abstract: A polyamide resin composition for a blow-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260° C. and a take-up speed at strand break of 50 m/min or more when measured at 260° C.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: September 7, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Publication number: 20210261775
    Abstract: A polyamide resin composition for a blow-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260° C. and a take-up speed at strand break of 50 m/min or more when measured at 260° C.
    Type: Application
    Filed: July 29, 2019
    Publication date: August 26, 2021
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Publication number: 20210246307
    Abstract: A polyamide resin composition for an extrusion-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260° C. and a take-up speed at strand break of 30 m/min or more when measured at 260° C.
    Type: Application
    Filed: July 29, 2019
    Publication date: August 12, 2021
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Publication number: 20210222005
    Abstract: A resin composition includes at least a polyamide (A) and a modified cyclodextrin (B), wherein the polyamide (A) is blended in an amount of 80 parts by weight or more and 99.9 parts by weight or less and the modified cyclodextrin (B) is blended in an amount of 0.1 parts by weight or more and 20 parts by weight or less with respect to 100 parts by weight in total of the polyamide (A) and the modified cyclodextrin (B).
    Type: Application
    Filed: October 15, 2018
    Publication date: July 22, 2021
    Inventors: Kohei Yamashita, Eri Takao, Takumi Wakabayashi, Tatsuya Takamoto, Kohei Koyanagi, Sadayuki Kobayashi
  • Patent number: 10829603
    Abstract: There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: November 10, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro Nomura, Nobuhiro Morioka, Kentaro Sano, Noriyuki Hirano, Sadayuki Kobayashi
  • Publication number: 20200347193
    Abstract: There are provided a fiber reinforced thermoplastic resin molded article including a thermoplastic resin [A], carbon fibers [B] and a polyrotaxane [C], the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C] being included in amounts of 40 to 98 parts by weight, 1 to 40 parts by weight and 1 to 20 parts by weight, respectively, based on 100 parts by weight of the total content of the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C], wherein the carbon fibers [B] included in the molded article have a weight-average fiber length [Lw] in a range of 0.5 to 20 mm, and a ratio ([C]/[B]) of the content of the polyrotaxane [C] to that of the carbon fibers [B] is 0.04 or more and 0.5 or less; and a thermoplastic resin molded article which has excellent impact strength and also has excellent conductivity.
    Type: Application
    Filed: January 23, 2019
    Publication date: November 5, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shin HIRATA, Sadayuki KOBAYASHI, Keiichiro NOMURA
  • Patent number: 10626273
    Abstract: Disclosed is a resin composition including a thermoplastic resin (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain having a reactive functional group at the end, which are mixed together, the resin composition containing a fibrous filler (C) in the amount of 1 to 200 parts by weight relative to 100 parts by weight of the total amount of the thermoplastic resin (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: April 21, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Tatsuya Takamoto, Keiichiro Nomura, Nobuhiro Morioka, Sadayuki Kobayashi
  • Patent number: 10442735
    Abstract: The present invention aims to provide an inorganic substance-laminated sheet that can be used suitably for applications that require high gas barrier properties. The inorganic substance-laminated sheet includes a sheet having a dispersed structure with a structural period of 0.001 ?m to 100 ?m on at least one surface and an inorganic substance layer covering the surface having the dispersed structure.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: October 15, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Yoshikazu Sato, Keiichiro Nomura, Motoyuki Suzuki, Sadayuki Kobayashi, Minoru Yoshida
  • Publication number: 20190309164
    Abstract: Disclosed is a resin composition including a thermoplastic resin (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain having a reactive functional group at the end, which are mixed together, the resin composition containing a fibrous filler (C) in the amount of 1 to 200 parts by weight relative to 100 parts by weight of the total amount of the thermoplastic resin (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.
    Type: Application
    Filed: August 3, 2017
    Publication date: October 10, 2019
    Applicant: TORAY Industries, Inc.
    Inventors: Tatsuya TAKAMOTO, Keiichiro NOMURA, Nobuhiro MORIOKA, Sadayuki KOBAYASHI
  • Publication number: 20190232572
    Abstract: A hollow molded article having a joining site where two or more split objects are welded by plastic welding and comes into contact with pressurized hydrogen, wherein an average spherulite size in a portion which is 500 ?m deep inside from a surface of the hollow molded article is 20 ?m or less, and a tensile strength of a test piece containing the joining site of the hollow molded article is 80% or more based on a tensile strength of a test piece not containing the joining site of the hollow molded article.
    Type: Application
    Filed: August 21, 2017
    Publication date: August 1, 2019
    Inventors: Shinichiro Ochiai, Shota Suzuki, Sadayuki Kobayashi
  • Patent number: 10119024
    Abstract: Disclosed is a resin composition including at least a polyamide (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain, which are mixed together, wherein 80 parts by weight or more and 99.9 parts by weight or less of the polyamide (A) and 0.1 part by weight or more and 20 parts by weight or less of the polyrotaxane (B) are mixed together relative to 100 parts by weight of the total amount of the polyamide (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 6, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro Nomura, Nobuhiro Morioka, Sadayuki Kobayashi
  • Patent number: 9850380
    Abstract: A polyamide resin composition for a molded article exposed to high-pressure hydrogen contains a polyamide 6 resin (A) and a polyamide resin (B) having a melting point, as determined by DSC, that is not higher than a melting point of the polyamide 6 resin (A) +20° C. and a cooling crystallization temperature, as determined by DSC, that is higher than a cooling crystallization temperature of the polyamide 6 resin (A), the polyamide resin (B) present in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the polyamide 6 resin (A). The polyamide resin composition can provide a molded article having excellent weld properties and is less likely to suffer failure points despite repeated charging and discharging of high-pressure hydrogen.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 26, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Daisuke Sato, Shinichiro Ochiai, Sadayuki Kobayashi
  • Publication number: 20170335999
    Abstract: A polyamide resin composition for a molded article exposed to high-pressure hydrogen contains a polyamide resin (A) including a unit derived from hexamethylenediamine and a unit derived from an aliphatic dicarboxylic acid of 8 to 12 carbon atoms and an ethylene/?-olefin copolymer (B) modified with an unsaturated carboxylic acid and/or a derivative thereof. The polyamide resin composition provides a molded article having excellent flexibility and heat cycle resistance and less likely to suffer failure points despite repeated charging and discharging of high-pressure hydrogen.
    Type: Application
    Filed: October 26, 2015
    Publication date: November 23, 2017
    Inventors: Shinichiro Ochiai, Daisuke Sato, Sadayuki Kobayashi
  • Publication number: 20170335104
    Abstract: Disclosed is a resin composition including at least a polyamide (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain, which are mixed together, wherein 80 parts by weight or more and 99.9 parts by weight or less of the polyamide (A) and 0.1 part by weight or more and 20 parts by weight or less of the polyrotaxane (B) are mixed together relative to 100 parts by weight of the total amount of the polyamide (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 23, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro NOMURA, Nobuhiro MORIOKA, Sadayuki KOBAYASHI
  • Patent number: 9783670
    Abstract: An epoxy resin composition according to the present invention comprises an epoxy compound (A), a block copolymer (B) and a curing agent (C), wherein the block copolymer (B) is composed of a polymer block (a) comprising a (meth)acrylic polymer and a polymer block (b) comprising an acrylic polymer that is different from the polymer block (a), said epoxy resin composition having such a property that a cured resin product produced by curing the epoxy resin composition forms a microphase-separated structure. A cured product of the epoxy resin composition forms a highly ordered phase structure, and therefore has excellent toughness and stiffness.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: October 10, 2017
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro Nomura, Nobuhiro Morioka, Sadayuki Kobayashi
  • Publication number: 20170029620
    Abstract: A polyamide resin composition for a molded article exposed to high-pressure hydrogen contains a polyamide 6 resin (A) and a polyamide resin (B) having a melting point, as determined by DSC, that is not higher than a melting point of the polyamide 6 resin (A) +20° C. and a cooling crystallization temperature, as determined by DSC, that is higher than a cooling crystallization temperature of the polyamide 6 resin (A), the polyamide resin (B) present in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the polyamide 6 resin (A). The polyamide resin composition can provide a molded article having excellent weld properties and is less likely to suffer failure points despite repeated charging and discharging of high-pressure hydrogen.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 2, 2017
    Inventors: Daisuke Sato, Shinichiro Ochiai, Sadayuki Kobayashi
  • Publication number: 20160340485
    Abstract: There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.
    Type: Application
    Filed: February 17, 2015
    Publication date: November 24, 2016
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro NOMURA, Nobuhiro MORIOKA, Kentaro SANO, Noriyuki HIRANO, Sadayuki KOBAYASHI