Patents by Inventor Joong-jin Han

Joong-jin Han 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).

  • PREPARATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20210221954
    Abstract: A method is provided for preparing a low temperature thermosetting polyarylene sulfide having significantly low crystallinity while maintaining a low melt flow rate at a high polymerization yield, so as to ensure excellent laser welding property and mechanical properties even when used in a molded product on the transmitting side of laser beam by a laser welding method.
    Type: Application
    Filed: October 25, 2019
    Publication date: July 22, 2021
    Inventors: Myeongjin Ha, Joong Jin Han, Eunju Park, Sung Ho Lee, Myong Jo Ham, Jeongbin Lee, Youngseok Kim
  • SEPARATION AND PURIFICATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20210214503
    Abstract: The present disclosure relates to a method of more efficiently separating and purifying a polyarylene sulfide exhibiting excellent strength, heat resistance, flame retardancy, and processability when processed into a molded product after polymerization.
    Type: Application
    Filed: October 18, 2019
    Publication date: July 15, 2021
    Inventors: Hansol Kim, Joong Jin Han, Sanghwan Jo
  • PREPARATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20210171715
    Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an aliphatic amino acid hydrochloride in addition to existing materials for dehydration.
    Type: Application
    Filed: November 23, 2018
    Publication date: June 10, 2021
    Inventors: Eunju PARK, Hansol KIM, Joong Jin HAN, Hyun Woog RYU, Kwonsu JUNG, Yong Jin JANG
  • PREPARATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20210115193
    Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by using a dihalogenated aromatic compound in a predetermined equivalent ratio with respect to a sulfur compound and performing both dehydration and polymerization under optimum conditions.
    Type: Application
    Filed: July 3, 2019
    Publication date: April 22, 2021
    Inventors: Kwonsu JUNG, Joong Jin HAN, Eunju PARK, Hyun Woog RYU, Hansol KIM
  • Block polymer and polymer electrolyte membrane comprising same
    Patent number: 10947338
    Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Yunah Yu, Eunju Park, Yu Jin Kim
  • Method of preparing polyphenylene sulfide and high-viscosity polyphenylene sulfide prepared using the same
    Patent number: 10941249
    Abstract: The present invention relates to a method of preparing a polyphenylene sulfide and a high-viscosity polyphenylene sulfide prepared using the method. In this method, the ratio of an organic phase to an aqueous phase is controlled by controlling dehydration conditions, so that high viscosity may be realized without adversely affecting a reaction or physical properties during preparation of the polyphenylene sulfide.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 9, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Kwonsu Jung, Joong Jin Han, Eun Ju Park, Hyun Woog Ryu
  • PROCESS FOR RECOVERING AMIDE COMPOUNDS
    Publication number: 20210039963
    Abstract: There is provided a method for efficiently recovering amide-based compounds such as N-methyl-2-pyrrolidone from a waste liquid containing amide-based compounds such as N-methyl-2-pyrrolidone generated, for example, in a production process of polyarylene sulfide.
    Type: Application
    Filed: November 15, 2019
    Publication date: February 11, 2021
    Inventors: Sanghwan Jo, Joong Jin Han, Hansol Kim
  • Block polymer and polymer electrolyte membrane including same
    Patent number: 10899874
    Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane comprising the same, a membrane-electrode assembly comprising the polymer electrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polymer electrolyte membrane.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: January 26, 2021
    Assignee: LG CHEM, LTD
    Inventors: Yong Jin Jang, Joong Jin Han, Esder Kang, Yunah Yu, Youngjea Kim
  • Polymer electrolyte for secondary battery and secondary battery including the same
    Patent number: 10749210
    Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 18, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Compound and polymer electrolyte membrane using same
    Patent number: 10727516
    Abstract: The present specification relates to a novel compound, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Sehee Jung, Youngjea Kim, Esder Kang, Hyun Woog Ryu
  • Polymer Electrolyte for Secondary Battery and Lithium Secondary Battery Comprising the Same
    Publication number: 20200194832
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery comprising the same, and particularly, to a polymer electrolyte for a secondary battery, in which mechanical properties, ionic conductivity, and electrical conductivity are improved by comprising a polymer and an electron-acceptor having at least one double bond, as a dopant, and a lithium secondary battery in which electrochemical stability at high temperature and high voltage is enhanced by comprising the polymer electrolyte.
    Type: Application
    Filed: July 3, 2018
    Publication date: June 18, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • CONDUCTIVE POLYARYLENE SULFIDE RESIN COMPOSITION
    Publication number: 20200172732
    Abstract: The present invention provides a polyarylene sulfide resin composition comprising a mixture of polyarylene sulfide and a binder resin having excellent electrical conductivity and high temperature stability.
    Type: Application
    Filed: October 30, 2018
    Publication date: June 4, 2020
    Inventors: Hyun Woog RYU, Joong Jin HAN, Eunju PARK, Kwonsu JUNG, Hansol KIM, Jong Hyun CHAE, Daeil KIM
  • PREPARATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20200087460
    Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an acidic compound in addition to existing materials for dehydration.
    Type: Application
    Filed: October 18, 2018
    Publication date: March 19, 2020
    Inventors: Hansol KIM, Joong Jin HAN, Eunju PARK, Hyun Woog RYU, Kwonsu JUNG
  • POLYMER ELECTROLYTE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20200014064
    Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.
    Type: Application
    Filed: October 30, 2017
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Fluorine-based compound for brancher, polymer using same, and polymer electrolyte membrane using same
    Patent number: 10526282
    Abstract: The present specification relates to a fluorine-based compound for a brancher, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell using the same, and a redox flow battery including the same.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Woog Ryu, Sehee Jung, Joong Jin Han, Yong Jin Jang, Youngjea Kim, Esder Kang
  • METHOD OF PREPARING POLYARYLENE SULFIDE
    Publication number: 20190390016
    Abstract: According to the present invention, an alkali metal salt such as NaCl which is a major by-product of polyarylene sulfide polymerization may be recycled in the dehydration reaction for the preparation of a sulfur source, thereby providing a method of preparing a polyarylene sulfide with a high yield in an economical manner.
    Type: Application
    Filed: September 14, 2018
    Publication date: December 26, 2019
    Inventors: Hansol KIM, Joong Jin HAN, Eunju PARK, Hyun Woog RYU, Kwonsu JUNG
  • METHOD FOR PREPARING POLYARYLENE SULFIDE
    Publication number: 20190367681
    Abstract: A method for preparing polyarylene sulfide that can control a viscosity grade thereof by adjusting the molar ratio of water and amide-based compounds present in a polymerization reaction.
    Type: Application
    Filed: January 12, 2018
    Publication date: December 5, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Kwonsu JUNG, Joong Jin HAN, Eunju PARK, Hyun Woog RYU
  • Polymer electrolyte membrane
    Patent number: 10483576
    Abstract: The present specification relates to a polymer electrolyte membrane including a polymer and inorganic particles.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: November 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Youngjea Kim, Joong Jin Han, Yunah Yu, Esder Kang, Yong Jin Jang
  • Polymer and polymer electrolyte membrane comprising same
    Patent number: 10446864
    Abstract: The present specification relates to a polymer with improved ion transport capability, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: October 15, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Esder Kang, Joong Jin Han, Youngjea Kim, Yong Jin Jang, Yunah Yu
  • Ion transport material, electrolyte membrane comprising same, and method for producing same
    Patent number: 10439245
    Abstract: The present application relates to an ion transport material, an electrolyte membrane including the same, and a method for manufacturing the same, and more specifically, provides an ion transport material in which inorganic particles are dispersed in a sulfonate group-containing partially fluorine-based polymer, an electrolyte membrane including the same, and a method for manufacturing the same.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: October 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hyungsam Choi, Joong Jin Han, Youngjea Kim, Esder Kang, Chong Kyu Shin, Tae Geun Noh, Sikwon Moon