Patents by Inventor Hyun Woog RYU

Hyun Woog RYU 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).

  • Toxic Waste Treatment Process And Treatment Apparatus
    Publication number: 20240116791
    Abstract: The present disclosure relates to a toxic waste treatment process and treatment apparatus including: a temperature raising operation of raising a temperature of a toxic waste solid to a heat treatment temperature selected from 300° C. to 600° C. at an average temperature raising rate of 5° C./min or less; and a heat treatment operation of heat-treating the toxic waste solid at the heat treatment temperature.
    Type: Application
    Filed: September 14, 2022
    Publication date: April 11, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Manki Cho, Hyun Woog Ryu, Bonsik Joo, Jeong Kyu Kim, Yeon Hwa Lee
  • Sludge Treatment Process
    Publication number: 20230303417
    Abstract: A sludge treatment process including: adjusting sludge to a particle diameter of more than 2 mm to 45 mm or less; a step of pyrolyzing the adjusted sludge in a low-oxygen or oxygen-free atmosphere and at a temperature of 350° C. to 500° C.; and a step of combusting a gas generated in the pyrolysis. Such process may be used to decompose harmful compounds and maximize the efficiency of the process.
    Type: Application
    Filed: April 29, 2022
    Publication date: September 28, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Bonsik Joo, Hyun Woog Ryu, Manki Cho, Jeong Kyu Kim
  • Preparation method of polyarylene sulfide
    Patent number: 11414521
    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: Grant
    Filed: July 3, 2019
    Date of Patent: August 16, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Kwonsu Jung, Joong Jin Han, Eunju Park, Hyun Woog Ryu, Hansol Kim
  • Method for preparing polyarylene sulfide
    Patent number: 11407860
    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: Grant
    Filed: January 12, 2018
    Date of Patent: August 9, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Kwonsu Jung, Joong Jin Han, Eunju Park, Hyun Woog Ryu
  • Conductive polyarylene sulfide resin composition
    Patent number: 11274207
    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: Grant
    Filed: October 30, 2018
    Date of Patent: March 15, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Woog Ryu, Joong Jin Han, Eunju Park, Kwonsu Jung, Hansol Kim, Jong Hyun Chae, Daeil Kim
  • Method of preparing polyarylene sulfide
    Patent number: 11274183
    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: Grant
    Filed: September 14, 2018
    Date of Patent: March 15, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hansol Kim, Joong Jin Han, Eunju Park, Hyun Woog Ryu, Kwonsu Jung
  • Preparation method of polyarylene sulfide
    Patent number: 11192981
    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: Grant
    Filed: October 18, 2018
    Date of Patent: December 7, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hansol Kim, Joong Jin Han, Eunju Park, Hyun Woog Ryu, Kwonsu Jung
  • Preparation method of polyarylene sulfide
    Patent number: 11192980
    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: Grant
    Filed: November 23, 2018
    Date of Patent: December 7, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Eunju Park, Hansol Kim, Joong Jin Han, Hyun Woog Ryu, Kwonsu Jung, Yong Jin Jang
  • 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
  • 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
  • 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
  • METHOD OF PREPARING POLYPHENYLENE SULFIDE AND HIGH-VISCOSITY POLYPHENYLENE SULFIDE PREPARED USING THE SAME
    Publication number: 20200181330
    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: Application
    Filed: November 14, 2017
    Publication date: June 11, 2020
    Inventors: Kwonsu JUNG, Joon Jin HAN, Eun Ju PARK, Hyun Woog RYU
  • 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
  • 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
  • Compound comprising aromatic ring, and polyelectrolyte membrane using same
    Patent number: 10428016
    Abstract: The present specification relates to a compound comprising an aromatic ring, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Sehee Jung, Hyun Woog Ryu, Yunah Yu
  • Compound comprising aromatic ring having sulfonamide and ion transport group, polymer comprising same, and polyelectrolyte membrane using same
    Patent number: 10418656
    Abstract: The present specification relates to a compound comprising an aromatic ring, a polymer comprising the same, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: September 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Sehee Jung, Hyun Woog Ryu, Yunah Yu