Patents by Inventor Young-young Hwang

Young-young Hwang 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: 20160251481
    Abstract: The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which specific siloxane compounds are introduced in the main chain of polycarbonate and thus exhibits the effects of improving impact strength at room temperature, impact strength at low-temperature and melt index.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 1, 2016
    Inventors: Young Young HWANG, Hyong Min BAHN, Jung Jun PARK, Moo Ho HONG, Ki Jae LEE, Byoung Kyu CHUN, Un KO, Young Wook SON
  • Publication number: 20160145187
    Abstract: A polyorganosiloxane compound, a method of preparing the same, and a copolycarbonate resin comprising the same are disclosed. Particularly, a copolycarbonate resin, which may be applied to a variety of applications, and in particular, comprises a polyorganosiloxane compound used as an impact modifier, a modifier, or a comonomer of a copolycarbonate resin and has improved mechanical properties such as low-temperature impact strength, is disclosed.
    Type: Application
    Filed: August 11, 2015
    Publication date: May 26, 2016
    Inventors: Hyong Min BAHN, Moo Ho HONG, Young Young Hwang, Min Jeong Kim, Jung Jun PARK
  • Patent number: 9328197
    Abstract: Disclosed are polycarbonate having high fluidity through inclusion of an aliphatic polyhydric alcohol-substituted diphenol compound in a polycarbonate backbone and a method of preparing the same. The polycarbonate is polymerized by comprising a diphenol mixture and a carbonate precursor, the diphenol mixture comprising an aliphatic polyhydric alcohol-substituted diphenol compound according to Formula 1 and a bisphenol compound.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 3, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Un Ko, Hyong Min Bahn, Moo Ho Hong, Byoung Kue Chun, Young Young Hwang, Min Jeong Kim, Jung Jun Park, Ki Jae Lee
  • Patent number: 9303121
    Abstract: Disclosed are a terminally modified polyoxyalkylene glycol which may dramatically improve color uniformity and machinability, when applied to a polycarbonate resin transmittance, a polycarbonate resin composition comprising the same, and a light guide plate manufactured using the same.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 5, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Hyong Min Bahn, Un Ko, Min Jeong Kim, Hyun Jung Ryu, Jae Chan Park, Jung Jun Park, Ki Heung Yoo, Ki Jae Lee, Byeong Hoon Lee, Byoung Kue Chun, Moo Ho Hong, Young Young Hwang
  • Patent number: 9267034
    Abstract: A polyorganosiloxane compound, a method of preparing the same, and a copolycarbonate resin comprising the same are disclosed. Particularly, a copolycarbonate resin, which may be applied to a variety of applications, and in particular, comprises a polyorganosiloxane compound used as an impact modifier, a modifier, or a comonomer of a copolycarbonate resin and has improved mechanical properties such as low-temperature impact strength, is disclosed.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 23, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hyong Min Bahn, Moo Ho Hong, Young Young Hwang, Min Jeong Kim, Jung Jun Park
  • Patent number: 9255179
    Abstract: According to the present disclosure, a copolycarbonate being economically prepared, and having improved low-temperature impact strength with improved transparency and flowability which are conflicting properties with each other, simultaneously, and a molded article including the same, may be provided.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: February 9, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Jung Jun Park, Min Jeong Kim, Un Ko, Ki Jae Lee, Moo Ho Hong, Hyong Min Bahn, Byoung Kyu Chun, Young Young Hwang
  • Publication number: 20150344623
    Abstract: According to the present disclosure, a copolycarbonate being economically prepared, and having improved low-temperature impact strength with improved transparency and flowability which are conflicting properties with each other, simultaneously, and a molded article including the same, may be provided.
    Type: Application
    Filed: September 16, 2014
    Publication date: December 3, 2015
    Inventors: Jung Jun PARK, Min Jeong KIM, Un KO, Ki Jae LEE, Moo Ho HONG, Hyong Min BAHN, Byoung Kyu CHUN, Young Young HWANG
  • Publication number: 20150315380
    Abstract: A polyorganosiloxane compound, a method of preparing the same, and a copolycarbonate resin comprising the same are disclosed. Particularly, a copolycarbonate resin, which may be applied to a variety of applications, and in particular, comprises a polyorganosiloxane compound used as an impact modifier, a modifier, or a comonomer of a copolycarbonate resin and has improved mechanical properties such as low-temperature impact strength, is disclosed.
    Type: Application
    Filed: March 2, 2015
    Publication date: November 5, 2015
    Inventors: Hyong Min BAHN, Moo Ho HONG, Young Young HWANG, Min Jeong KIM, Jung Jun PARK
  • Publication number: 20150299387
    Abstract: Disclosed are polycarbonate having high fluidity through inclusion of an aliphatic polyhydric alcohol-substituted diphenol compound in a polycarbonate backbone and a method of preparing the same. The polycarbonate is polymerized by comprising a diphenol mixture and a carbonate precursor, the diphenol mixture comprising an aliphatic polyhydric alcohol-substituted diphenol compound according to Formula 1 and a bisphenol compound.
    Type: Application
    Filed: September 30, 2014
    Publication date: October 22, 2015
    Inventors: Un KO, Hyong Min BAHN, Moo Ho HONG, Byoung Kue CHUN, Young Young HWANG, Min Jeong KIM, Jung Jun PARK, Ki Jae LEE
  • Publication number: 20150247003
    Abstract: Disclosed are a terminally modified polyoxyalkylene glycol which may dramatically improve color uniformity and machinability, when applied to a polycarbonate resin transmittance, a polycarbonate resin composition comprising the same, and a light guide plate manufactured using the same.
    Type: Application
    Filed: August 29, 2014
    Publication date: September 3, 2015
    Applicant: LG Chem Ltd.
    Inventors: Hyong Min Bahn, Un Ko, Min Jeong Kim, Hyun Jung Ryu, Jae Chan Park, Jung Jun Park, Ki Heung Yoo, Ki Jae Lee, Byeong Hoon Lee, Byoung Kue Chun, Moo Ho Hong, Young Young Hwang
  • Publication number: 20150210831
    Abstract: Disclosed is a polycarbonate resin a composition. The polycarbonate resin composition may simply and exactly improve appearance properties such as yellow index (Y. I), haze and the like, and thermal stability during a high-temperature process, and provide processability by reducing gas generation during molding, through provision of a relational formula of addition amounts of a hindered phenol-based compound and a phosphite-based compound which function as antioxidants when mixed with the polycarbonate resin.
    Type: Application
    Filed: July 1, 2014
    Publication date: July 30, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Hyong Min Bahn, Min Jeong Kim, Jung Jun Park, Moo Ho Hong, Young Young Hwang
  • Patent number: 8933186
    Abstract: Disclosed are novel polyorganosiloxane, a polycarbonate resin composition comprising the same and a modified polycarbonate resin. Disclosed is also a novel polyorganosiloxane derivative which may be utilized in various applications and is used in particular as an impact modifier, a modifier or a comonomer of polycarbonate resin.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: January 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Hyong Min Bahn, Moo Ho Hong, Young Young Hwang, Min Jeong Kim, Jung Jun Park
  • Publication number: 20140206802
    Abstract: Disclosed are novel polyorganosiloxane, a polycarbonate resin composition comprising the same and a modified polycarbonate resin. Disclosed is also a novel polyorganosiloxane derivative which may be utilized in various applications and is used in particular as an impact modifier, a modifier or a comonomer of polycarbonate resin.
    Type: Application
    Filed: February 1, 2013
    Publication date: July 24, 2014
    Inventors: Hyong Min Bahn, Moo Ho Hong, Young Young Hwang, Min Jeong Kim, Jung Jun Park
  • Patent number: 7629402
    Abstract: The present invention relates to an acrylonitrile-butadiene-styrene resin composition, and more precisely, an acrylonitrile-butadiene-styrene resin composition which is prepared by adding a brominated organic compound flame retardant, an antimony flame retardant auxiliary and one or more other compounds selected from a group consisting of metal stearate and stearamide compounds to a basic resin composed of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer. The acrylonitrile-butadiene-styrene resin composition of the present invention not only has excellent flame resistance but also has improved thermostability and weatherability.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: December 8, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Si-kyung Ryu, Yong-yeon Hwang, Jin-woo Yi, Young-young Hwang, Je-sun Yoo
  • Publication number: 20070142524
    Abstract: The present invention relates to an acrylonitrile-butadiene-styrene resin composition, and more precisely, an acrylonitrile-butadiene-styrene resin composition which is prepared by adding a brominated organic compound flame retardant, an antimony flame retardant auxiliary and one or more other compounds selected from a group consisting of metal stearate and stearamide compounds to a basic resin composed of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer. The acrylonitrile-butadiene-styrene resin composition of the present invention not only has excellent flame resistance but also has improved thermostability and weatherability.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 21, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Si-kyung RYU, Yong-yeon HWANG, Jin-woo YI, Young-young HWANG, Je-sun YOO