Patents by Inventor Dae June Joe

Dae June Joe 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).

  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 11787883
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: October 17, 2023
    Inventors: Ji Eun Kim, Won Taeck Lim, Won Mun Choi, Dae June Joe
  • 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
  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 11359037
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: June 14, 2022
    Inventors: Seung Ho Choi, Dae June Joe, Won Taeck Lim, Won Mun Choi
  • 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
  • Modified Conjugated Diene-based Polymer And Method Of Preparing The Same
    Publication number: 20220056172
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Ji Eun Kim, Won Taeck Lim, Won Mun Choi, Dae June Joe
  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 11230618
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: January 25, 2022
    Inventors: Ji Eun Kim, Won Taeck Lim, Won Mun Choi, Dae June Joe
  • Modified monomer, modified polymer including the same, and methods of preparing the same
    Patent number: 11059927
    Abstract: The present invention relates to a substituted styrene-based compound represented by Formula 1 (refer to the specification and the scope of the claims), a method of preparing the styrene-based compound, a modified polymer including a functional group derived from the substituted styrene-based compound, a method of preparing the modified polymer, a rubber composition including the modified polymer, and a molded article manufactured from the rubber composition.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: July 13, 2021
    Inventors: Min Soo Kim, Won Mun Choi, Dae June Joe
  • Compound and modified conjugated diene-based polymer including functional group derived therefrom
    Patent number: 11021548
    Abstract: The present invention relates to a compound represented by Formula 1, a method for preparing the same, and a modified conjugated diene-based polymer having a high modification ratio and including a functional group derived from the compound.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: June 1, 2021
    Inventors: Seung Ho Choi, Ji Eun Kim, Won Mun Choi, Dae June Joe
  • Modified Conjugated Diene-Based Polymer And Method Of Preparing The Same
    Publication number: 20200369804
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seung Ho Choi, Dae June Joe, Won Taeck Lim, Won Mun Choi
  • Novel Compound and Modified Conjugated Diene-based Polymer Including Functional Group Derived Therefrom
    Publication number: 20200369790
    Abstract: The present invention relates to a compound represented by Formula 1, a method for preparing the same, and a modified conjugated diene-based polymer having a high modification ratio and including a functional group derived from the compound.
    Type: Application
    Filed: September 5, 2018
    Publication date: November 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seung Ho Choi, Ji Eun Kim, Won Mun Choi, Dae June Joe
  • 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
  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 10808057
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: October 20, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Seung Ho Choi, Dae June Joe, Won Taeck Lim, Won Mun Choi
  • Amino silane-based compound, method of preparing the same, and modified conjugated diene-based polymer including the compound
    Patent number: 10800862
    Abstract: An amino silane-based compound, methods of preparing the same, and a modified conjugated diene-based polymer including an amino silane-based functional group are disclosed herein. In an embodiment, the amino silane-based compound is represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently a hydrocarbon group having 1 to 30 carbon atoms, or a glycol unit represented by R3 is a divalent hydrocarbon group having 1 to 30 carbon atoms, R4, R5, R6, and R7 are each independently a monovalent hydrocarbon group having 1 to 30 carbon atoms, R8 is a divalent hydrocarbon group having 1 to 10 carbon atoms, j and k are each independently 0 or 1, n is an integer selected from 1 to 10, wherein at least one of R1 or R2 is the glycol unit.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 13, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Won Taeck Lim, Won Mun Choi, Seung Ho Choi, Ji Eun Kim, Dae June Joe
  • 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
  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 10696754
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 30, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Ji Eun Kim, Dae June Joe, Cheol Jae Kim, Won Mun Choi
  • Modified Conjugated Diene-Based Polymer And Method Of Preparing The Same
    Publication number: 20200123287
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Application
    Filed: October 30, 2017
    Publication date: April 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seung Ho Choi, Dae June Joe, Won Taeck Lim, Won Mun Choi
  • Modified Conjugated Diene-Based Polymer And Method Of Preparing The Same
    Publication number: 20200123277
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Application
    Filed: November 1, 2017
    Publication date: April 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ji Eun Kim, Dae June Joe, Cheol Jae Kim, Won Mun Choi
  • Modified polymer, method of preparing the same, and rubber composition including the modified polymer
    Patent number: 10538599
    Abstract: The present invention relates to a modified polymer having a high modification ratio and an excellent affinity with a filler, a method of preparing the same, a rubber composition including the modified polymer, and a molded article prepared from the rubber composition. The modified polymer according to the present invention may exhibit a high modification ratio by including functional groups in a polymer main chain and on at least one end thereof, and thus, an affinity with a filler, such as silica, may be excellent. Also, the rubber composition according to the present invention may have excellent processability by including the modified polymer having an excellent affinity with the filler, and, as a result, a processed product (e.g., tire) prepared by using the rubber composition may have excellent tensile strength, abrasion resistance, and wet road surface resistance.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Min Soo Kim, Seung Ho Choi, Dae June Joe, Won Mun Choi
  • Amino Silane-Based Compound, Method of Preparing The Same, And Modified Conjugated Diene-Based Polymer Including The Compound
    Publication number: 20190256617
    Abstract: An amino silane-based compound, methods of preparing the same, and a modified conjugated diene-based polymer including an amino silane-based functional group are disclosed herein. In an embodiment, amino silane-based compound is represented by Formula 1; wherein, in Formula 1, R1 and R2 are each independently a hydrocarbon group having 1 to 30 carbon atoms, or a glycol unit represented by R3 is a divalent hydrocarbon group having 1 to 30 carbon atoms, R4, R5, R6, and R7 are each independently a monovalent hydrocarbon group having 1 to 30 carbon atoms, R8 is a divalent hydrocarbon group having 1 to 10 carbon atoms, j and k are each independently 0 or 1, n is an integer selected from 1 to 10, wherein at least one of R1 or R2 is the glycol unit.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 22, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Won Taeck Lim, Won Mun Choi, Seung Ho Choi, Ji Eun Kim, Dae June Joe
  • Method for preparing rubber composition using aminosilane-based terminal modifier introducing functional group, and rubber composition prepared thereby
    Patent number: 10351635
    Abstract: The present invention relates to a terminal modified and conjugated diene-based polymer rubber composition including a terminal modified and conjugated diene-based polymer which is characterized in that an aminosilane-based terminal modifier represented by Formula 1 or Formula 2 is combined at the terminal of a conjugated diene-based polymer, and a method for preparing the same.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: July 16, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seung-Ho Choi, Min-Soo Kim, Cheol-Jae Kim, Zeong-Back Kim, Ji-Eun Kim, Won-Mun Choi, Dae-June Joe