Patents by Inventor Takuro Kitamura

Takuro Kitamura 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: 11198766
    Abstract: The present invention provides a method for producing a molded article by pressing a composite material containing a resin composition and carbon fibers, wherein the resin composition contains a polyamide resin, a copper compound and potassium halide, and (1) the copper compound content is 0.1 parts by mass or more relative to 100 parts by mass of the polyamide resin.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 14, 2021
    Assignee: Teijin Limited
    Inventors: Takeshi Matsuda, Takuro Kitamura
  • Publication number: 20180346663
    Abstract: The present invention provides a method for producing a molded article by pressing a composite material containing a resin composition and carbon fibers, wherein the resin composition contains a polyamide resin, a copper compound and potassium halide, and (1) the copper compound content is 0.1 parts by mass or more relative to 100 parts by mass of the polyamide resin.
    Type: Application
    Filed: November 18, 2016
    Publication date: December 6, 2018
    Applicant: Teijin Limited
    Inventors: Takeshi Matsuda, Takuro Kitamura
  • Patent number: 9701069
    Abstract: Disclosed is a method for manufacturing a composite material, which includes performing press molding of a fiber matrix structure including reinforcing fibers and a matrix resin mainly including a polyester-based resin having a crystallization temperature of 185° C. or lower. Furthermore, the polyester-based resin is preferably a polyester-based copolymer. In addition, it is preferred that the matrix resin includes a carbodiimide, and that the carbodiimide has a cyclic structure. Moreover, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers; and that the discontinuous fibers are randomly oriented in the structure.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: July 11, 2017
    Assignee: Teijin Limited
    Inventors: Kazunari Kosaka, Takuro Kitamura, Yasuyuki Kondo, Daisuke Kobayashi
  • Patent number: 9650350
    Abstract: A resin composition which comprises polylactic acid, does not release an isocyanate group at the time of production and has excellent hydrolysis resistance and a low environmental burden. The resin composition comprises: (A) 100 parts by weight of a resin component (component A) containing polylactic acid (component A-?); (B) 0.001 to 10 parts by weight of a compound (component B) having one carbodiimide group and a cyclic structure in which first nitrogen and second nitrogen are bonded to each other via a bonding group, the cyclic structure consisting of 8 to 50 atoms; and (C) 0.001 to 2 parts by weight of at least one antioxidant (component C) selected from the group consisting of a hindered phenol-based compound, a phosphite-based compound, a phosphonite-based compound and a thioether-based compound.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: May 16, 2017
    Assignee: TEIJIN LIMITED
    Inventors: Yuichi Matsuno, Masaki Mitsunaga, Jitsuo Oda, Masatsugu Furuki, Shinichiro Shoji, Takuro Kitamura, Yoshitaka Shibata
  • Patent number: 9631061
    Abstract: A fiber-reinforced composite material obtained by reinforcing a matrix resin with fibers, wherein the matrix resin contains a thermoplastic resin and a carbon black, the fibers are discontinuous carbon fibers, a part of the discontinuous carbon fibers forms fiber bundles, and the thickness of a thinnest part of the matrix resin which is located between an outermost surface of the composite material and the fibers existing in an inside of the composite material is less than 100 ?m. Further, it is preferred that the thermoplastic resin is a polyamide-based resin, that the discontinuous carbon fibers have a length of from 3 to 100 mm, and that the orientation of the discontinuous carbon fibers is random. Furthermore, it is preferred that the size of the primary particle diameter of the carbon black is within a range of 7 to 75 nm.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 25, 2017
    Assignee: Teijin Limited
    Inventors: Yasuyuki Kondo, Takuro Kitamura, Kazunari Kosaka, Daisuke Kobayashi
  • Publication number: 20160145410
    Abstract: A fiber-reinforced composite material obtained by reinforcing a matrix resin with fibers, wherein the matrix resin contains a thermoplastic resin and a carbon black, the fibers are discontinuous carbon fibers, a part of the discontinuous carbon fibers forms fiber bundles, and the thickness of a thinnest part of the matrix resin which is located between an outermost surface of the composite material and the fibers existing in an inside of the composite material is less than 100 ?m. Further, it is preferred that the thermoplastic resin is a polyamide-based resin, that the discontinuous carbon fibers have a length of from 3 to 100 mm, and that the orientation of the discontinuous carbon fibers is random. Furthermore, it is preferred that the size of the primary particle diameter of the carbon black is within a range of 7 to 75 nm.
    Type: Application
    Filed: July 30, 2014
    Publication date: May 26, 2016
    Applicant: Teijin Limited
    Inventors: Yasuyuki Kondo, Takuro Kitamura, Kazunari Kosaka, Daisuke Kobayashi
  • Publication number: 20160101542
    Abstract: Provided is a method for manufacturing a composite material including peforming press molding a fiber matrix structure including reinforcing fibers and a matrix resin which mainly includes a polyester-based resin and includes an aromatic polycarbonate resin and. Furthermore, it is preferred that the polyester-based resin is a polyester copolymer and includes a terephthalic acid component and an isophthalic acid component. In addition, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers or fibers mainly including discontinuous fibers; and furthermore, that the discontinuous fibers are randomly oriented in the structure.
    Type: Application
    Filed: September 19, 2013
    Publication date: April 14, 2016
    Applicant: Teijin Limited
    Inventors: Kazunari Kosaka, Takuro Kitamura, Yasuyuki Kondo, Daisuke Kobayashi
  • Publication number: 20150239182
    Abstract: Disclosed is a method for manufacturing a composite material, which includes performing press molding of a fiber matrix structure including reinforcing fibers and a matrix resin mainly including a polyester-based resin having a crystallization temperature of 185° C. or lower. Furthermore, the polyester-based resin is preferably a polyester-based copolymer. In addition, it is preferred that the matrix resin includes a carbodiimide, and that the carbodiimide has a cyclic structure. Moreover, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers; and that the discontinuous fibers are randomly oriented in the structure.
    Type: Application
    Filed: September 19, 2013
    Publication date: August 27, 2015
    Applicant: TEIJIN LIMITED
    Inventors: Kazunari Kosaka, Takuro Kitamura, Yasuyuki Kondo, Daisuke Kobayashi
  • Publication number: 20140066555
    Abstract: A method for producing a composition including polylactic acid and having excellent heat stability, especially moist heat stability, and a molded article thereof. The composition includes 100 parts by weight of a resin component (component A) which is composed of 5 to 100 wt % of polylactic acid (component A-?) and 95 to 0 wt % of a thermoplastic resin (component A-?), 0.001 to 5 parts by weight of a phosphono-fatty acid ester (component B), 0.01 to 5 parts by weight of a phosphate metal salt (component C), 0.001 to 2 parts by weight of at least one antioxidant (component D) selected from the group consisting of a phosphite-based compound, a phosphonite-based compound, a hindered phenol-based compound and a thioether-based compound, and 0.001 to 10 parts by weight of an end-sealing agent (component E).
    Type: Application
    Filed: November 7, 2013
    Publication date: March 6, 2014
    Applicants: TEIJIN LIMITED, Teijin Chernicals Limited
    Inventors: Yuichi MATSUNO, Masaki MITSUNAGA, Jitsuo ODA, Mitsuru DOTEGUCHI, Yoshitaka SHIBATA, Kiyotsuna TOYOHARA, Masahiro IWAI, Takuro KITAMURA
  • Publication number: 20120289625
    Abstract: A resin composition which comprises polylactic acid, does not release an isocyanate group at the time of production and has excellent hydrolysis resistance and a low environmental burden. The resin composition comprises: (A) 100 parts by weight of a resin component (component A) containing polylactic acid (component A-?); (B) 0.001 to 10 parts by weight of a compound (component B) having one carbodiimide group and a cyclic structure in which first nitrogen and second nitrogen are bonded to each other via a bonding group, the cyclic structure consisting of 8 to 50 atoms; and (C) 0.001 to 2 parts by weight of at least one antioxidant (component C) selected from the group consisting of a hindered phenol-based compound, a phosphite-based compound, a phosphonite-based compound and a thioether-based compound.
    Type: Application
    Filed: January 17, 2011
    Publication date: November 15, 2012
    Applicant: TEIJIN LIMITED
    Inventors: Yuichi Matsuno, Masaki Mitsunaga, Jitsuo Oda, Masatsugu Furuki, Shinichiro Shoji, Takuro Kitamura, Yoshitaka Shibata
  • Publication number: 20110263762
    Abstract: A composition comprising polylactic acid and having excellent heat stability, especially moist heat stability, and a molded article thereof. The composition comprises 100 parts by weight of a resin component (component A) which is composed of 5 to 100 wt % of polylactic acid (component A-?) and 95 to 0 wt % of a thermoplastic resin (component A-?), 0.001 to 5 parts by weight of a phosphono-fatty acid ester (component B), 0.01 to 5 parts by weight of a phosphate metal salt (component C), 0.001 to 2 parts by weight of at least one antioxidant (component D) selected from the group consisting of a phosphite-based compound, a phosphonite-based compound, a hindered phenol-based compound and a thioether-based compound, and 0.001 to 10 parts by weight of an end-sealing agent (component E).
    Type: Application
    Filed: November 2, 2009
    Publication date: October 27, 2011
    Applicants: TEIJIN LIMITED, TEIJIN CHEMICALS LTD.
    Inventors: Yuichi Matsuno, Masaki Mitsunaga, Jitsuo Oda, Mitsuru Doteguchi, Yoshitaka Shibata, Kiyotsuna Toyohara, Masahiro Iwai, Takuro Kitamura
  • Patent number: 6841215
    Abstract: A heat resistant pipe is formed from a composition comprising polyphenylene ether resin and polystyrene resin. Pipes made from this composition possess superior thermal and pressure resistance. Their impact resistance and thermal expansion characteristics permit them to be utilized advantageously in all environments and during all seasons with little risk of failure.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: January 11, 2005
    Assignee: General Electric
    Inventors: Takuro Kitamura, Shigeru Kurioka, Masaru Sato
  • Patent number: 6838503
    Abstract: A resin composition useful for wire and cable covering material is formed by compounding a phosphate ester retardant, boron phosphate, and zinc borate hydrate with a polyphenylene ether group resin or a combination of a polyphenylene ether group resin and an aromatic vinyl group resin, in a specific ratio.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 4, 2005
    Assignee: General Electric Compa
    Inventors: Ming Yin, Takuro Kitamura, Atsuo Oshiro, Kenichi Ishiwa, Kazunari Kosaka, Hiroshi Kubo
  • Patent number: 6737459
    Abstract: A polyphenylene ether group resin composite can comprise: polyphenylene ether group resin, flame retardation reagent, and recovered polystyrene group resin. The recovered polystyrene group resin can be recovered using limonene or thermal shrinkage recovery, and can comprises polystyrene that has been recovered from a product or a part of a product that has been used by an end customer for a period of time.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: May 18, 2004
    Assignee: General Electric Company
    Inventors: Atsushi Ebisawa, Takuro Kitamura, Kazunari Kosaka, Masaru Sato, Shigeru Shimizu
  • Publication number: 20030119953
    Abstract: A polyphenylene ether group resin composite can comprise: polyphenylene ether group resin, flame retardation reagent, and recovered polystyrene group resin. The recovered polystyrene group resin can be recovered using limonene or thermal shrinkage recovery, and can comprises polystyrene that has been recovered from a product or a part of a product that has been used by an end customer for a period of time.
    Type: Application
    Filed: August 7, 2002
    Publication date: June 26, 2003
    Inventors: Atsushi Ebisawa, Takuro Kitamura, Kazunari Kosaka, Masaru Sato, Shigeru Shimizu
  • Publication number: 20030100677
    Abstract: A heat resistant pipe is formed from a composition comprising polyphenylene ether resin and polystyrene resin. Pipes made from this composition possess superior thermal and pressure resistance. Their impact resistance and thermal expansion characteristics permit them to be utilized advantageously in all environments and during all seasons with little risk of failure.
    Type: Application
    Filed: August 23, 2002
    Publication date: May 29, 2003
    Inventors: Takuro Kitamura, Shigeru Kurioka, Masaru Sato
  • Publication number: 20030055138
    Abstract: A resin composition useful for wire and cable covering material is formed by compounding a phosphate ester retardant, boron phosphate, and zinc borate hydrate with a polyphenylene ether group resin or a combination of a polyphenylene ether group resin and an aromatic vinyl group resin, in a specific ratio.
    Type: Application
    Filed: June 28, 2002
    Publication date: March 20, 2003
    Inventors: Ming Yin, Takuro Kitamura, Atsuo Oshiro, Kenichi Ishiwa, Kazunari Kosaka, Hiroshi Kubo
  • Patent number: 6451906
    Abstract: The object of the present invention is to provide a flame-retardant resin composition which has a high heat resistance, superior impact resistance and superior flame-retarding properties. The present invention provides a flame-retardant resin composition which is characterized by the fact that said composition contains (A) a polycarbonate type resin, (B) a silicone resin constructed from siloxane units expressed by the formula RSiO1.5 (T units) and siloxane units expressed by the formula R3SiO0.5 (M units), or a silicone resin constructed from T units, M units and siloxane units expressed by the formula SiO2.0 (Q units) (R indicates an unsubstituted or substituted monovalent hydrocarbon group with 1 to 10 carbon atoms), and (C) an anti-drip agent, and the aforementioned composition contains 0.1 to 9 parts by weight of the abovementioned silicone resin (B), and 0.01 to 10 parts by weight of the abovementioned anti-drip agent, per 100 parts by weight of the abovementioned polycarbonate resin (A).
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: September 17, 2002
    Assignee: General Electric Company
    Inventors: Akihiro Saito, Takuro Kitamura, Hiromi Ishida, Yoshiaki Takezawa, Yutaka Horie, Michio Zenbayashi
  • Publication number: 20020123575
    Abstract: A resin composite material according to the present invention contains a thermoplastic resin composition containing a polyphenylene oxide, a layered clay mineral dispersed in the thermoplastic resin composition and organized with an organizing agent, and a polar compound dispersed in the thermoplastic resin composition and chemically bonded to the layered clay mineral. The layered clay mineral is satisfactorily uniformly dispersed in the thermoplastic resin composition even after kneading under high temperature conditions. The resin composite material has adequately enhanced characteristics of mechanical strength, durability, and so on.
    Type: Application
    Filed: December 27, 2001
    Publication date: September 5, 2002
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Makoto Kato, Arimitsu Usuki, Junji Shirai, Hiroyuki Wakabayashi, Kazutoyo Osuka, Sho Sato, Takuro Kitamura
  • Patent number: 6103827
    Abstract: A thermoplastic resin composition having improved transparency and containing polycarbonate resin and/or polyester carbonate resin and acrylic resin and/or methacrylic resin comprisesA) (a) polycarbonate resin and/or (b) polyester carbonate resin andB) acrylic resin and/or methacrylic resin, having 0.000005-0.5 parts by weight of C) a basic compound catalyst and/or acidic compound catalyst added with respect to a total of 100 parts by weight of the aforementioned components A) and B).
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: August 15, 2000
    Assignee: General Electric Company
    Inventors: Akihiro Saito, Takashi Nagai, Takuro Kitamura, Wie-Hin Pan, Patrick McCloskey