Patents by Inventor Moo-Ho Hong

Moo-Ho Hong 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: 11155694
    Abstract: Provided are a polycarbonate resin composition comprising a polycarbonate resin, a black colorant, a yellow colorant, and at least one ultraviolet absorber selected from the group consisting of a benzotriazole-based compound, a benzophenone-based compound, and a triazine-based compound, and an optical molded article composed thereof.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 26, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Daehyeon Hwang, Young Wook Son, Byoungkue Jeon, Moo Ho Hong
  • Patent number: 11066516
    Abstract: The present invention relates to a polycarbonate resin composition for a light guide plate and an optical molded article using the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color tone uniformity required as the light guide plate, and also is excellent in processability and thus can be usefully used as a material of the light guide plate.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 20, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Byoungkue Chun, Moo Ho Hong, Hyong Min Bahn, Un Ko
  • Patent number: 10995214
    Abstract: The present invention relates to a polycarbonate resin composition and an optical molded article comprising the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color stability and thus can ensure high transparency, and further can enhance the stability of a polycarbonate resin.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 4, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkue Chun, Un Ko, Young Wook Son, Moo Ho Hong, Hyong Min Bahn, Tae Yun Ko
  • Patent number: 10907040
    Abstract: The present invention relates to a polycarbonate composition and an article including the same. The polycarbonate composition according to the present invention includes a copolycarbonate having a specific siloxane structure and a branched or non-branched polycarbonate, and simultaneously uses a flame retardant and an organophosphorus compound, thereby being able to exhibit excellent flame retardancy and impact strength and also to maintain the impact strength even under high temperature and high humidity conditions for a long period of time.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: February 2, 2021
    Assignee: LG CHEM LTD.
    Inventors: Hyong Min Bahn, Young Young Hwang, Moo Ho Hong, Jung Jun Park, Ki Jae Lee
  • Publication number: 20200317912
    Abstract: The present invention relates to a polycarbonate resin composition and an optical molded article comprising the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color stability and thus can ensure high transparency, and further can enhance the stability of a polycarbonate resin.
    Type: Application
    Filed: October 18, 2017
    Publication date: October 8, 2020
    Inventors: Byoungkue CHUN, Un KO, Young Wook SON, Moo Ho HONG, Hyong Min BAHN, Tae Yun KO
  • Patent number: 10767052
    Abstract: The present disclosure relates to a polycarbonate resin composition having increased fluidity and excellent physical properties, and comprising: a first copolycarbonate comprising a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3 below; and a second copolycarbonate comprising a repeating unit represented by Chemical Formula 1 and a repeating unit represented by Chemical Formula 4 below,
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: September 8, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Ki Jae Lee, Jung Jun Park, Moo Ho Hong, Hyong Min Bahn, Young Young Hwang
  • Patent number: 10669375
    Abstract: The present disclosure relates to a copolycarbonate having improved impact strength at low temperature and yellow index simultaneously, a composition including the same, and the copolycarbonate comprising: an aromatic polycarbonate-based first repeating unit, an aromatic polycarbonate-based second repeating unit having at least one siloxane bond, and an aromatic polycarbonate-based third repeating unit having at least one siloxane bond containing fluoro-substituted C1-15 alkyl.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 2, 2020
    Assignee: LG CHEM LTD.
    Inventors: Jung Jun Park, Young Young Hwang, Moo Ho Hong, Hyong Min Bahn, Ki Jae Lee
  • Publication number: 20200165413
    Abstract: Provided are a polycarbonate resin composition comprising a polycarbonate resin, a black colorant, a yellow colorant, and at least one ultraviolet absorber selected from the group consisting of a benzotriazole-based compound, a benzophenone-based compound, and a triazine-based compound, and an optical molded article composed thereof.
    Type: Application
    Filed: September 27, 2018
    Publication date: May 28, 2020
    Inventors: Daehyeon HWANG, Young Wook SON, Byoungkue JEON, Moo Ho HONG
  • Patent number: 10577461
    Abstract: Provided are a novel polyorganosiloxane capable of preparing copolycarbonate with improved weather resistance and flowability while maintaining the intrinsic physical properties of polycarbonate resin, and a copolycarbonate prepared by using the same.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: March 3, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Young Young Hwang, Young Wook Son, Moo Ho Hong, Hyong Min Bahn, Byoung Kue Chun, Jung Jun Park, Un Ko, Ki Jae Lee
  • Patent number: 10538620
    Abstract: The present invention provides a method for preparing a polycarbonate by removing a solvent from a polycarbonate polymerization solution without impairing the physical properties of the polycarbonate.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Un Ko, Byoungkue Chun, Moo Ho Hong, Young Wook Son, Tae Yun Ko
  • Patent number: 10526445
    Abstract: The present disclosure relates to a copolycarbonate including repeating units of Chemical Formulas 1, 2 and 3; and a composition comprising the same:
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong
  • Patent number: 10494478
    Abstract: The present invention provides a method for preparing a polycarbonate by removing a solvent from a polycarbonate polymerization solution without impairing the physical properties of the polycarbonate.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Un Ko, Byoungkue Chun, Moo Ho Hong, Young Wook Son, Tae Yun Ko
  • Patent number: 10465045
    Abstract: The present invention relates to a novel polyorganosiloxane capable of producing a copolycarbonate having improved hardness and to a copolycarbonate prepared by using the same. The novel polyorganosiloxane according to the present invention can be used as a monomer of a copolycarbonate, and it can exhibit improved hardness and chemical resistance simultaneously while maintaining the intrinsic properties of copolycarbonate due to the alkylene or isosorbide-derived structure included in the formula thereof.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: November 5, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jung Jun Park, Young Young Hwang, Ki Jae Lee, Moo Ho Hong, Hyong Min Bahn
  • Publication number: 20190330466
    Abstract: The present invention relates to a polycarbonate composition and an article including the same. The polycarbonate composition according to the present invention includes a copolycarbonate having a specific siloxane structure and a branched or non-branched polycarbonate, and simultaneously uses a flame retardant and an organophosphorus compound, thereby being able to exhibit excellent flame retardancy and impact strength and also to maintain the impact strength even under high temperature and high humidity conditions for a long period of time.
    Type: Application
    Filed: October 17, 2017
    Publication date: October 31, 2019
    Inventors: Hyong Min BAHN, Young Young HWANG, Moo Ho HONG, Jung Jun PARK, Ki Jae LEE
  • Publication number: 20190300648
    Abstract: The present invention relates to a polycarbonate resin composition for a light guide plate and an optical molded article using the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color tone uniformity required as the light guide plate, and also is excellent in processability and thus can be usefully used as a material of the light guide plate.
    Type: Application
    Filed: June 12, 2019
    Publication date: October 3, 2019
    Inventors: Byoungkue CHUN, Moo Ho HONG, Hyong Min BAHN, Un KO
  • Patent number: 10385163
    Abstract: The present invention relates to a polycarbonate resin composition for a light guide plate and an optical molded article using the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color tone uniformity required as the light guide plate, and also is excellent in processability and thus can be usefully used as a material of the light guide plate.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: August 20, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Byoungkue Chun, Moo Ho Hong, Hyong Min Bahn, Un Ko
  • Patent number: 10364327
    Abstract: The present invention relates to a novel polyorganosiloxane capable of producing a copolycarbonate having improved chemical resistance and flame retardancy while maintaining the intrinsic physical properties of a polycarbonate resin and to a copolycarbonate prepared by using the same.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 30, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Ki Jae Lee, Moo Ho Hong
  • Publication number: 20190112421
    Abstract: The present disclosure relates to a copolycarbonate having improved flowability while maintaining excellent impact strength at room temperature and low temperature, and a composition including the same.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 18, 2019
    Inventors: Ki Jae LEE, Jung Jun PARK, Moo Ho HONG, Hyong Min BAHN, Young Young HWANG
  • Publication number: 20190085122
    Abstract: The present invention provides a method for preparing a polycarbonate by removing a solvent from a polycarbonate polymerization solution without impairing the physical properties of the polycarbonate.
    Type: Application
    Filed: June 29, 2017
    Publication date: March 21, 2019
    Inventors: Un KO, Byoungkue CHUN, Moo Ho HONG, Young Wook SON, Tae Yun KO
  • Patent number: 10196516
    Abstract: Disclosed are a copolycarbonate resin composition having improved mechanical properties such as impact resistance and chemical resistance while maintaining resin flowability, and an article including the same, where the copolycarbonate resin composition comprises a copolycarbonate resin including an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating unit having at least one siloxane bond; and a polysiloxane polymer containing a hydrocarbon-based functional group having 2 or more carbon atoms.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 5, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong, Byoung Kyu Chun, Un Ko, Ki Jae Lee, Young Wook Son