Patents by Inventor Katsushi Yamaoka

Katsushi Yamaoka 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).

  • Publication number: 20200062896
    Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Toru Takashima, Katsushi Yamaoka, Takeshi Ishikawa
  • Publication number: 20180371160
    Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 27, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Toru TAKASHIMA, Katsushi YAMAOKA, Takeshi ISHIKAWA
  • Patent number: 9193824
    Abstract: An object of the present invention is to provide a polycarbonate resin composition comprising a polycarbonate resin containing, as a raw material, isosorbide that is easy to produce and excellent in such as mechanical properties, etc., and a molded body, particularly a foam-molded body, composed of the resin composition. The present invention provides a foam-molded body of a resin composition containing a polycarbonate resin having at least a structural unit derived from a dihydroxy compound represented by the following formula (1): wherein the strain-hardening factor of uniaxial extensional viscosity of said resin composition is from 0.1 to 5.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: November 24, 2015
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Katsushi Yamaoka, Toru Takashima
  • Publication number: 20140357748
    Abstract: An object of the present invention is to provide a polycarbonate resin composition comprising a polycarbonate resin containing, as a raw material, isosorbide that is easy to produce and excellent in such as mechanical properties, etc., and a molded body, particularly a foam-molded body, composed of the resin composition. The present invention provides a foam-molded body of a resin composition containing a polycarbonate resin having at least a structural unit derived from a dihydroxy compound represented by the following formula (1): wherein the strain-hardening factor of uniaxial extensional viscosity of said resin composition is from 0.1 to 5.
    Type: Application
    Filed: August 20, 2014
    Publication date: December 4, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Katsushi YAMAOKA, Toru Takashima
  • Publication number: 20140179818
    Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.
    Type: Application
    Filed: February 28, 2014
    Publication date: June 26, 2014
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Toru TAKASHIMA, Katsushi YAMAOKA, Takeshi ISHIKAWA
  • Patent number: 8378057
    Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 19, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Katsushi Yamaoka
  • Publication number: 20110288264
    Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 24, 2011
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Katsushi YAMAOKA
  • Publication number: 20100099830
    Abstract: In order to provide a resin composition with a well-balanced properties such as thermal resistance, moldability, flexibility and others through the use of a polyhydroxycarboxylic-acid-based resin, the resin composition contains at least a polyhydroxycarboxylic-acid-based resin comprising a structural unit represented by Formula (1) as a main structural unit; and a polyoxytrimethyleneglycol-based resin comprising a structural unit represented by Formula (2) as a main structural unit —R1—COO—??(1) (where, R1 in Formula (1) represents a divalent aliphatic hydrocarbon group)
    Type: Application
    Filed: January 16, 2008
    Publication date: April 22, 2010
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomohide Yoshida, Katsushi Yamaoka
  • Publication number: 20090072184
    Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.
    Type: Application
    Filed: April 14, 2006
    Publication date: March 19, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Katsushi Yamaoka
  • Publication number: 20060172097
    Abstract: There are provided an endless belt for image-forming apparatuses comprising a molded product produced from a blended mixture containing a thermoplastic elastomer, a thermoplastic resin and a conductive substance, the said endless belt having properties satisfying the following formulae (1), (2) and (3): SR(100V)/SR(500V)<VR(100V)/VR(250)??(1) SR(100V)/SR(500V)?30??(2) 8?VR(100V)/VR(250V)?100??(3) wherein SR(100V) represents a surface resistivity as measured by applying a voltage of 100V to the endless belt for 10 sec, SR(500V) represents a surface resistivity as measured by applying a voltage of 500V to the endless belt for 10 sec, VR(100V) represents a volume resistivity as measured by applying a voltage of 100V to the endless belt for 10 sec, and VR(250V) represents a volume resistivity as measured by applying a voltage of 250V to the endless belt for 10 sec.
    Type: Application
    Filed: January 18, 2006
    Publication date: August 3, 2006
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Makoto Morikoshi, Toshihiro Otsu, Katsushi Yamaoka, Kazuya Mizumoto