Patents by Inventor Hidekazu Kawakubo

Hidekazu Kawakubo 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: 10344162
    Abstract: Provided is a polycarbonate resin composition containing 1-20 parts by weight of an amorphous thermoplastic resin having a glass transition temperature of not lower than 110° C., and 1-50 parts by weight of plate-shaped fillers having a number average major axis length of 0.5-45 ?m, with respect to 100 parts by weight of a matrix resin component containing 35-95 wt % of a polycarbonate resin and 5-65 wt % of a thermoplastic polyester resin.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: July 9, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Hidekazu Kawakubo, Kazunori Saegusa, Kazushi Nakatani
  • Patent number: 10253178
    Abstract: A method of improving flowability of polycarbonate or polyarylate includes mixing the polycarbonate or the polyarylate with a flowability improver including a polyester. The polyester is a polycondensate of monomers including a bisphenol component (B) and a dicarboxylic acid component (C) at a molar ratio satisfying (B):(C)=45:55-55:45. The polyester includes a portion derived from the bisphenol component (B) and the dicarboxylic acid component (C) in an amount of 50 mol % or more.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 9, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Shusuke Yoshihara, Hidekazu Kawakubo, Keika Hattori, Kazuaki Matsumoto, Kazunori Saegusa
  • Publication number: 20180155543
    Abstract: Provided is a polycarbonate resin composition containing 1-20 parts by weight of an amorphous thermoplastic resin having a glass transition temperature of not lower than 110° C., and 1-50 parts by weight of plate-shaped fillers having a number average major axis length of 0.5-45 ?m, with respect to 100 parts by weight of a matrix resin component containing 35-95 wt % of a polycarbonate resin and 5-65 wt % of a thermoplastic polyester resin.
    Type: Application
    Filed: June 3, 2016
    Publication date: June 7, 2018
    Applicant: KANEKA CORPORATION
    Inventors: Hidekazu KAWAKUBO, Kazunori SAEGUSA, Kazushi NAKATANI
  • Patent number: 9944790
    Abstract: A resin composition including 40 parts by weight or more and less than 95 parts by weight of a polycarbonate resin and 5 parts by weight or more and less than 60 parts by weight of a polyester-polyether copolymer as a base resin, wherein the polyester-polyether copolymer is a copolymer which is obtained by a polymerization using a germanium compound catalyst, includes aromatic polyester units and modified polyether units represented by the following general formula 1, and has an IV value within a range of 0.30 to 1.00 can be well-balanced in moldability, heat resistance, impact resistance, and low linear expansion property, without deteriorating a surface appearance of a molding obtained therefrom.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: April 17, 2018
    Assignee: KANEKA CORPORATION
    Inventors: Hidekazu Kawakubo, Shuji Taketani, Tetsuro Yamamoto
  • Publication number: 20170204262
    Abstract: A method of improving flowability of polycarbonate or polyarylate includes mixing the polycarbonate or the polyarylate with a flowability improver including a polyester. The polyester is a polycondensate of monomers including a bisphenol component (B) and a dicarboxylic acid component (C) at a molar ratio satisfying (B):(C)=45:55?55:45. The polyester includes a portion derived from the bisphenol component (B) and the dicarboxylic acid component (C) in an amount of 50 mol % or more.
    Type: Application
    Filed: April 3, 2017
    Publication date: July 20, 2017
    Applicant: KANEKA CORPORATION
    Inventors: Shusuke YOSHIHARA, Hidekazu KAWAKUBO, Keika HATTORI, Kazuaki MATSUMOTO, Kazunori SAEGUSA
  • Patent number: 9522493
    Abstract: A molded body 1 includes a rib part 3 standing on a back surface 2b opposite to a design surface 2a of a main body 2 of the molded body 1. A reduced thickness part 4 is formed on the back surface 2b of the main body 2, the ratio D/T is 0.975 to 1.07 where D is the diameter of a circle that passes through base ends 3b of both side faces 3a of the rib part 3 and is in contact with the design surface 2a of the main body 2 positioned between the base ends 3b, and T is the thickness of the main body 2 at an outer side of the reduced thickness part 4, and t<1.3(T?n) is satisfied where t is the thickness of the rib part 3, and n is the thickness of the reduced thickness part 4.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 20, 2016
    Assignee: KANEKA CORPORATION
    Inventors: Kazushi Nakatani, Hidekazu Kawakubo, Kazunori Saegusa
  • Publication number: 20150165659
    Abstract: A moulded body 1 includes a rib part 3 standing on a back surface 2b opposite to a design surface 2a of a main body 2 of the moulded body 1. A reduced thickness part 4 is formed on the back surface 2b of the main body 2, the ratio D/T is 0.975 to 1.07 where D is the diameter of a circle that passes through base ends 3b of both side faces 3a of the rib part 3 and is in contact with the design surface 2a of the main body 2 positioned between the base ends 3b, and T is the thickness of the main body 2 at an outer side of the reduced thickness part 4, and t<1.3(T?n) is satisfied where t is the thickness of the rib part 3, and n is the thickness of the reduced thickness part 4.
    Type: Application
    Filed: July 10, 2013
    Publication date: June 18, 2015
    Applicant: KANEKA CORPORATION
    Inventors: Kazushi Nakatani, Hidekazu Kawakubo, Kazunori Saegusa
  • Publication number: 20150099106
    Abstract: A resin composition including 40 parts by weight or more and less than 95 parts by weight of a polycarbonate resin and 5 parts by weight or more and less than 60 parts by weight of a polyester-polyether copolymer as a base resin, wherein the polyester-polyether copolymer is a copolymer which is obtained by a polymerization using a germanium compound catalyst, includes aromatic polyester units and modified polyether units represented by the following general formula 1, and has an IV value within a range of 0.30 to 1.00 can be well-balanced in moldability, heat resistance, impact resistance, and low linear expansion property, without deteriorating a surface appearance of a molding obtained therefrom.
    Type: Application
    Filed: April 30, 2013
    Publication date: April 9, 2015
    Applicant: KANEKA CORPORATION
    Inventors: Hidekazu Kawakubo, Shuji Taketani, Tetsuro Yamamoto
  • Patent number: 8580903
    Abstract: The aim is to provide a flame retardant for thermoplastic resins that has a high flame-retardant imparting effect, and that produces a thermoplastic resin composition with superior moldability and workability that does not easily bleed out and a molded body with superior resistance to heat-moisture and chemicals; and a flame retardant for thermoplastic resins that has a high flame-retardant imparting effect, and that produces a flame retardant with a heat resistance to working temperatures of 300° C. or higher and a molded body with superior resistance to reflow heat and chemicals. Disclosed is a flame retardant, which is a specific flame retardant for thermoplastic resins comprising the reaction product of a nitrogen-containing compound and a phosphorous-containing compound, that is insoluble in toluene and comprises in the range of 5 to 10 wt % of phosphorus atoms.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: November 12, 2013
    Assignee: Kaneka Corporation
    Inventors: Shuji Taketani, Hidekazu Kawakubo, Noriyuki Suzuki, Tetsuro Yamamoto, Yutaka Kaneda
  • Publication number: 20120157632
    Abstract: The aim is to provide a flame retardant for thermoplastic resins that has a high flame-retardant imparting effect, and that produces a thermoplastic resin composition with superior moldability and workability that does not easily bleed out and a molded body with superior resistance to heat-moisture and chemicals; and a flame retardant for thermoplastic resins that has a high flame-retardant imparting effect, and that produces a flame retardant with a heat resistance to working temperatures of 300° C. or higher and a molded body with superior resistance to reflow heat and chemicals. Disclosed is a flame retardant, which is a specific flame retardant for thermoplastic resins comprising the reaction product of a nitrogen-containing compound and a phosphorous-containing compound, that is insoluble in toluene and comprises in the range of 5 to 10 wt % of phosphorus atoms.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 21, 2012
    Applicant: KANEKA CORPORATION
    Inventors: Shuji Taketani, Hidekazu Kawakubo, Noriyuki Suzuki, Tetsuro Yamamoto, Yutaka Kaneda