Patents by Inventor Eun-Gyeong LEE

Eun-Gyeong 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).

  • Catalyst composition, cleaning liquid composition containing the same, and method of cleaning polymerization apparatus using the cleaning liquid composition
    Patent number: 11912811
    Abstract: The present invention relates to a catalyst composition containing: one or more selected from the group consisting of a transition metal compound represented by Formula 1 and a transition metal compound represented by Formula 3, and dialkyl L-tartrate; a cleaning liquid composition containing the catalyst composition; and a method of cleaning a polymerization apparatus using the cleaning liquid composition, wherein all the variables are described herein.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: February 27, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Eun Gyeong Lee, Hong Soo Lee
  • Cleaning liquid composition and method for cleaning polymerization apparatus using same
    Patent number: 11549084
    Abstract: A cleaning liquid composition is provided. More particularly, a cleaning liquid composition includes a transition metal compound represented by Chemical Formula 1 (see the detailed description of the present invention); and a hydrocarbon-based solvent, and a cleaning method of a polymerization apparatus using the same.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: January 10, 2023
    Inventors: Dae June Joe, Won Mun Choi, Eun Gyeong Lee
  • Catalyst Composition, Cleaning Liquid Composition Containing the Same, and Method of Cleaning Polymerization Apparatus Using the Cleaning Liquid Composition
    Publication number: 20220162351
    Abstract: The present invention relates to a catalyst composition containing: one or more selected from the group consisting of a transition metal compound represented by Formula 1 and a transition metal compound represented by Formula 3, and dialkyl L-tartrate; a cleaning liquid composition containing the catalyst composition; and a method of cleaning a polymerization apparatus using the cleaning liquid composition, wherein all the variables are described herein.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 26, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Eun Gyeong Lee, Hong Soo Lee
  • Modified conjugated diene-based polymer and method for preparing the same
    Patent number: 11319386
    Abstract: The present invention relates to a modifier represented by Formula 1, a method for preparing the same, a modified conjugated diene-based polymer including a functional group derived from the modifier and having a high modification ratio, and a method for preparing the polymer.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 3, 2022
    Inventors: Ji Eun Kim, Eun Gyeong Lee, Dae June Joe, Won Mun Choi
  • Cleaning Liquid Composition and Method for Cleaning Polymerization Apparatus Using Same
    Publication number: 20200362273
    Abstract: A cleaning liquid composition is provided. More particularly, a cleaning liquid composition includes a transition metal compound represented by Chemical Formula 1 (see the detailed description of the present invention); and a hydrocarbon-based solvent, and a cleaning method of a polymerization apparatus using the same.
    Type: Application
    Filed: August 29, 2018
    Publication date: November 19, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Dae June Joe, Won Mun Choi, Eun Gyeong Lee
  • Separator for rechargeable lithium battery and rechargeable lithium battery including the same
    Patent number: 10826040
    Abstract: A separator for a rechargeable lithium battery includes a substrate; and a coating layer positioned on at least one side of the substrate, wherein a thickness ratio of the coating layer relative to the total thickness of the substrate and the coating layer ranges from about 5% to about 50%, and a loading level of the coating layer ranges from about 1.4 g/m2 to about 9.8 g/m2, and a rechargeable lithium battery including the same is provided.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: November 3, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyung-Bae Kim, Jong-Hwan Park, Byeong-Gyu Cho, Eun-Gyeong Lee, Jin-Hyuk In
  • Modified Conjugated Diene-Based Polymer and Method for Preparing the Same
    Publication number: 20200308368
    Abstract: The present invention relates to a modifier represented by Formula 1, a method for preparing the same, a modified conjugated diene-based polymer including a functional group derived from the modifier and having a high modification ratio, and a method for preparing the polymer.
    Type: Application
    Filed: October 18, 2018
    Publication date: October 1, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ji Eun Kim, Eun Gyeong Lee, Dae June Joe, Won Mun Choi
  • Separator for rechargeable lithium battery and rechargeable lithium battery including the same
    Patent number: 10333124
    Abstract: A separator for a rechargeable lithium battery includes: a substrate; and a coating layer on at least one side of the substrate, the coating layer including an acrylic-based copolymer obtained from polymerization of a (meth)acrylate salt and (meth)acrylonitrile, and a polyvinyl alcohol-based compound. A rechargeable lithium battery including the separator is also provided.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: June 25, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-Hwan Park, Byeong-Gyu Cho, Hyung-Bae Kim, Eun-Gyeong Lee, Jin-Hyuk In
  • SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    Publication number: 20160149188
    Abstract: A separator for a rechargeable lithium battery includes a substrate; and a coating layer positioned on at least one side of the substrate, wherein a thickness ratio of the coating layer relative to the total thickness of the substrate and the coating layer ranges from about 5% to about 50%, and a loading level of the coating layer ranges from about 1.4 g/m2 to about 9.8 g/m2, and a rechargeable lithium battery including the same is provided.
    Type: Application
    Filed: October 26, 2015
    Publication date: May 26, 2016
    Inventors: Hyung-Bae Kim, Jong-Hwan Park, Byeong-Gyu Cho, Eun-Gyeong Lee, Jin-Hyuk In
  • SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    Publication number: 20160149189
    Abstract: A separator for a rechargeable lithium battery includes: a substrate; and a coating layer on at least one side of the substrate, the coating layer including an acrylic-based copolymer obtained from polymerization of a (meth)acrylate salt and (meth)acrylonitrile, and a polyvinyl alcohol-based compound. A rechargeable lithium battery including the separator is also provided.
    Type: Application
    Filed: November 2, 2015
    Publication date: May 26, 2016
    Inventors: Jong-Hwan Park, Byeong-Gyu Cho, Hyung-Bae Kim, Eun-Gyeong Lee, Jin-Hyuk In
  • SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
    Publication number: 20160133903
    Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same, the separator including a substrate; and a coating layer on at least one side of the substrate, wherein the coating layer includes a polyvinylidene fluoride-containing compound, and an acryl-containing compound represented by the following Chemical Formula 1:
    Type: Application
    Filed: September 4, 2015
    Publication date: May 12, 2016
    Inventors: Yeon-Joo CHOI, Jong-Hwan PARK, Jung-Hyun NAM, Eun-Gyeong LEE