Patents by Inventor Chun Hwa Lee

Chun Hwa Lee 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: 20240124528
    Abstract: The present invention relates to an antagonist of interleukin-17B receptor (IL-17RB) which features interruption of the interaction of IL-17RB and MLK4. The present invention also relates to use of such antagonist for treatment of diseases or disorders associated with IL-17RB activation. Further disclosed is a phosphorylated IL-17RB as a biomarker for predicting prognosis and/or monitoring progression of cancer.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 18, 2024
    Applicant: Academia Sinica
    Inventors: Wen-Hwa LEE, Heng-Hsiung WU, Chun-Mei HU, Chun-Kai HUANG
  • Patent number: 11603462
    Abstract: A method of preparing a block copolymer composition is provided. The method includes: adding an aromatic vinyl monomer and a compound represented by Chemical Formula 1 to a hydrocarbon-based solvent and performing stirring to prepare a first mixed solution; adding a polymerization initiator to the first mixed solution and performing polymerization to prepare a second mixed solution; adding a conjugated diene-based monomer to the second mixed solution and performing polymerization to prepare a third mixed solution; and adding a coupling agent to the third mixed solution to perform a coupling reaction, An asphalt composition including the block copolymer composition prepared therefrom, is also provided.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: March 14, 2023
    Inventors: Seong Du Lee, Tae Jung Kim, Se Kyung Lee, Chun Hwa Lee
  • Patent number: 11203687
    Abstract: Provided is a block copolymer composition, and more particularly, a block copolymer composition including a diblock copolymer and a triblock copolymer. The diblock copolymer includes a first block containing a first conjugated diene-based monomer-derived repeating unit and a second block containing a first vinyl aromatic monomer-derived repeating unit, and a functional group derived from a modified initiator represented by the Chemical Formula 1 (see description of the invention) is included at one end of the diblock copolymer. A method of preparing the same, and an asphalt composition including the same, are provided.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: December 21, 2021
    Inventors: Se Kyung Lee, Tae Jung Kim, Hyun Woo Kim, Seong Du Lee, Chun Hwa Lee
  • Publication number: 20210017387
    Abstract: Provided is a block copolymer composition, and more particularly, a block copolymer composition including a diblock copolymer and a triblock copolymer. The diblock copolymer includes a first block containing a first conjugated diene-based monomer-derived repeating unit and a second block containing a first vinyl aromatic monomer-derived repeating unit, and a functional group derived from a modified initiator represented by the Chemical Formula 1 (see description of the invention) is included at one end of the diblock copolymer. A method of preparing the same, and an asphalt composition including the same, are provided.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 21, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Se Kyung Lee, Tae Jung Kim, Hyun Woo Kim, Seong Du Lee, Chun Hwa Lee
  • Publication number: 20200165441
    Abstract: A method of preparing a block copolymer composition is provided. The method includes: adding an aromatic vinyl monomer and a compound represented by Chemical Formula 1 to a hydrocarbon-based solvent and performing stirring to prepare a first mixed solution; adding a polymerization initiator to the first mixed solution and performing polymerization to prepare a second mixed solution; adding a conjugated diene-based monomer to the second mixed solution and performing polymerization to prepare a third mixed solution; and adding a coupling agent to the third mixed solution to perform a coupling reaction, An asphalt composition including the block copolymer composition prepared therefrom, is also provided.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 28, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seong Du Lee, Tae Jung Kim, Se Kyung Lee, Chun Hwa Lee
  • Patent number: 10442929
    Abstract: The present invention relates to an asphalt modifier including a main chain of a vinyl aromatic hydrocarbon-conjugated diene block copolymer, and more particularly, to an asphalt modifier capable of effectively improving low-temperature properties, high-temperature properties, storage stability, and the like of an asphalt composition due to excellent compatibility with the asphalt composition when a vinyl aromatic hydrocarbon-conjugated diene block copolymer containing a certain multifunctional group is used as the asphalt modifier, and an asphalt composition including the same.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 15, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Tae Jung Kim, Chun Hwa Lee, Hye Rim Lee
  • Publication number: 20190077962
    Abstract: The present invention relates to an asphalt modifier including a main chain of a vinyl aromatic hydrocarbon-conjugated diene block copolymer, and more particularly, to an asphalt modifier capable of effectively improving low-temperature properties, high-temperature properties, storage stability, and the like of an asphalt composition due to excellent compatibility with the asphalt composition when a vinyl aromatic hydrocarbon-conjugated diene block copolymer containing a certain multifunctional group is used as the asphalt modifier, and an asphalt composition including the same.
    Type: Application
    Filed: December 22, 2016
    Publication date: March 14, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Tae Jung Kim, Chun Hwa Lee, Hye Rim Lee
  • Patent number: 9926448
    Abstract: Provided are an asphalt modifier comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 and an asphalt composition comprising the asphalt modifier. (A-B-C)n-D??[Formula 1] (where A, B, C, D, and n are the same as defined in the specification) The asphalt modifier comprising the vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 may improve low-temperature and high-temperature physical properties when used in the asphalt composition, and since the asphalt modifier may also reduce dissolution time by increasing a dissolution rate, storage stability of the asphalt composition may be improved.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: March 27, 2018
    Assignee: LG Chem, Ltd.
    Inventors: You Seok Seo, Ji Myeong Lee, Tae Jung Kim, Chun Hwa Lee
  • Patent number: 9822249
    Abstract: Disclosed are an asphalt modifying agent and an asphalt composition containing the same. More specifically, disclosed are an asphalt modifying agent comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer and a low-molecular weight conjugated diene rubber (LCDR), and an asphalt composition containing the same. Advantageously, the present invention provides an asphalt modifying agent for greatly improving low-temperature properties and modification workability of a modified asphalt and an asphalt composition containing the same.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: November 21, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Chun Hwa Lee, Jung Eun Woo, You Seok Seo
  • Publication number: 20160326371
    Abstract: Provided are an asphalt modifier comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 and an asphalt composition comprising the asphalt modifier. (A-B-C)n-D??[Formula 1] (where A, B, C, D, and n are the same as defined in the specification) The asphalt modifier comprising the vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 may improve low-temperature and high-temperature physical properties when used in the asphalt composition, and since the asphalt modifier may also reduce dissolution time by increasing a dissolution rate, storage stability of the asphalt composition may be improved.
    Type: Application
    Filed: July 3, 2015
    Publication date: November 10, 2016
    Applicant: LG Chem, Ltd.
    Inventors: You Seok Seo, Ji Myeong Lee, Tae Jung Kim, Chun Hwa Lee
  • Publication number: 20160024292
    Abstract: Disclosed are an asphalt modifying agent and an asphalt composition containing the same. More specifically, disclosed are an asphalt modifying agent comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer and a low-molecular weight conjugated diene rubber (LCDR), and an asphalt composition containing the same. Advantageously, the present invention provides an asphalt modifying agent for greatly improving low-temperature properties and modification workability of a modified asphalt and an asphalt composition containing the same.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 28, 2016
    Applicant: LG Chem, Ltd.
    Inventors: Chun Hwa Lee, Jung Eun Woo, You Seok Seo