Patents by Inventor DooWhan Choi

DooWhan Choi 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: 20250176542
    Abstract: Provided are an antibacterial composition including a compound represented by Chemical Formula 1, and the antibacterial composition has improved thermal stability and antibacterial activity: wherein all the variables are described herein.
    Type: Application
    Filed: October 20, 2023
    Publication date: June 5, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Seungmo Lee, Leehyeon Baek, Jeong Yun Lee, Yoon Hyung Hur, Jiyoung Lee, Doowhan Choi
  • Patent number: 12317737
    Abstract: The present specification relates to a polymer including a first unit of Chemical Formula 1; a second unit of Chemical Formula 2; and a third unit of Chemical Formula 3 or 4, and an organic solar cell including the same.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 27, 2025
    Assignee: LG Chem, LTD.
    Inventors: Jiyoung Lee, Doowhan Choi, Songrim Jang, Bogyu Lim
  • Publication number: 20240409493
    Abstract: Provided are a compound of Chemical Formula 1, a coating composition including the compound, an organic light emitting device using the coating composition, and a manufacturing method thereof. wherein all the variables are described herein.
    Type: Application
    Filed: September 13, 2022
    Publication date: December 12, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Minseob Seo, Hyeonah Shin, Jiyoung Lee, Sejin Jung, Songrim Jang, Doowhan Choi, Jaechol Lee, Dowon Lim
  • Publication number: 20240407256
    Abstract: Provided are a compound represented by Chemical Formula 1, a coating composition including the compound represented by Chemical Formula 1, an organic light emitting device using the same, and a method of manufacturing the same. wherein all the variables are described herein.
    Type: Application
    Filed: May 9, 2023
    Publication date: December 5, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Minseob Seo, Jiyoung Lee, Youngju Park, Songrim Jang, Doowhan Choi, Keunsoo Lee, Jaechol Lee
  • Publication number: 20240341174
    Abstract: Provided are a compound of Chemical Formula 1, a coating composition including the compound, an organic light emitting device using the coating composition, and a manufacturing method thereof, wherein all the variables are described herein.
    Type: Application
    Filed: September 13, 2022
    Publication date: October 10, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Sejin Jung, Hyeonah Shin, Jiyoung Lee, Dowon Lim, Songrim Jang, Doowhan Choi, Jaechol Lee
  • Publication number: 20240284904
    Abstract: An antibacterial composition including a compound represented by the disclosed formula 1 and having an antibacterial activity of 80% or more as measured by the disclosed method 1, against at least one strain of gram-positive bacteria, gram-negative bacteria, and fungus. Since the antibacterial composition includes a hydrophilic functional group and a hydrophobic functional group at the same time, it is advantageous for imparting antibacterial properties.
    Type: Application
    Filed: September 28, 2022
    Publication date: August 29, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Seungmo Lee, Leehyeon Baek, Jeong Yun Lee, Hwanhee Lee, Doowhan Choi, Yoon Hyung Hur, Jiyoung Lee, Hyungsam Choi
  • Patent number: 11997921
    Abstract: The present invention relates to an organic light emitting device including: an anode; a cathode; and a light emitting light provided between the anode and the cathode, in which a first organic material layer including a composition which includes a compound of Chemical Formula 1 or a cured product thereof is included between the light emitting layer and the anode, and a second organic material layer including a composition which includes a copolymer of Chemical Formula 2 or a cured product thereof is included between the first organic material layer and the light emitting layer, Wherein all the variables are described herein.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: May 28, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Dowon Lim, Ji Hoon Kim, Juhwan Kim, Donghwan Lee, Jaesoon Bae, Jaechol Lee, Songrim Jang, Doowhan Choi, Keunsoo Lee, Jumin Lee
  • Publication number: 20230422604
    Abstract: The present disclosure relates to a compound represented by Chemical Formula 1, a coating composition including the compound represented by Chemical Formula 1, an organic light emitting device using the same, and a method for manufacturing the same: wherein L1 to L5, R1 to R4, Af1, Af2, Ar1, X1, X2, r1 to r4, m1 to m6, f1 and f2 are described herein.
    Type: Application
    Filed: December 17, 2021
    Publication date: December 28, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Minseob Seo, Dongwhan Lee, Youngju Park, Doowhan Choi, Seung Jun Yoo, Jaesoon Bae, Jaechol Lee
  • Publication number: 20230337530
    Abstract: The present disclosure relates to a compound represented by Chemical Formula 1, a coating composition comprising the compound represented by Chemical Formula 1 above, an organic light emitting device using the coating composition, and a method for manufacturing the organic light emitting device, wherein all the variables are described herein.
    Type: Application
    Filed: October 28, 2021
    Publication date: October 19, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Minseob Seo, Jiyoung Lee, Dowon Lim, Doowhan Choi, Eunhye Kang, Jaesoon Bae, Jaechol Lee
  • Publication number: 20230309369
    Abstract: The present disclosure relates to an organic light emitting device including an anode; a cathode; a light emitting layer provided between the anode and the cathode; a first organic material layer including a composition including a compound of Chemical Formula 1 or a cured material thereof provided between the light emitting layer and the anode; and a second organic material layer including a copolymer of Chemical Formula 3 or a cured material thereof provided between the first organic material layer and the light emitting layer, wherein all the variables are described herein.
    Type: Application
    Filed: August 13, 2021
    Publication date: September 28, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jiyoung Lee, Sungkyoung Kang, Gyoungsik Kim, Min Suk Jung, Jaesoon Bae, Jaechol Lee, Songrim Jang, Doowhan Choi, Jiyeon Shin, Eunhye Kang
  • Patent number: 11711966
    Abstract: The present specification relates to a polymer including a first unit of Chemical Formula 1; a second unit of Chemical Formula 2; and a third unit of Chemical Formula 3 or 4, and an organic solar cell including the same.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 25, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jiyoung Lee, Doowhan Choi, Bogyu Lim, Ji Hoon Kim
  • Patent number: 11690282
    Abstract: The present specification relates to an organic solar cell including a first electrode; a second electrode; and one or more organic material layers including a photoactive layer, wherein the photoactive layer includes an electron donor and an electron acceptor, the electron donor includes a polymer including a first unit represented by Chemical Formula 1; a second unit represented by Chemical Formula 2; and a third unit represented by Chemical Formula 3, and the electron acceptor includes a non-fullerene-based compound.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: June 27, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Doowhan Choi, Jiyoung Lee, Bogyu Lim, Songrim Jang, Ji Hoon Kim
  • Publication number: 20230140749
    Abstract: The present disclosure provides a novel compound represented by the following Chemical Formula 1 and an organic light emitting device including the same: wherein L, L?, L1 to L3, Ar1 to Ar3, R1 to R3, n, and a to c are described herein.
    Type: Application
    Filed: February 17, 2021
    Publication date: May 4, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Byeong Yun Lim, Jaechol Lee, Doowhan Choi, Yongwook Kim, Young Kwang Kim, Minseob Seo, Seung Jun Yoo
  • Publication number: 20230098935
    Abstract: The present specification relates to a fluorene-based compound of Chemical Formula 1, a coating composition including the fluorene-based compound of Chemical Formula 1, an organic light emitting device using the same, and a manufacturing method thereof wherein X1 to X4, L1, L2, R1 to R6, Ar1, Ar2, m1, m2, and n1 to n6 are described herein.
    Type: Application
    Filed: January 6, 2021
    Publication date: March 30, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hoon Kim, Jaesoon Bae, Jaechol Lee, Doowhan Choi, Sungkyoung Kang, Min Suk Jung
  • Patent number: 11401275
    Abstract: The present specification relates to a heterocyclic compound represented by Formula 1, an organic electronic device including the heterocyclic compound in an organic active layer, and a method for manufacturing the organic electronic device.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: August 2, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Ji Hoon Kim, Songrim Jang, Doowhan Choi, Jung Ha Park, Bogyu Lim
  • Patent number: 11398603
    Abstract: The present specification relates to a heterocyclic compound represented by Formula 1 and an organic electronic device comprising the same.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: July 26, 2022
    Inventors: Ji Hoon Kim, Jiyoung Lee, Songrim Jang, Doowhan Choi, Bogyu Lim, Junghyun Park
  • Patent number: 11393996
    Abstract: The present application relates to an organic electronic device comprising a first electrode; a second electrode provided opposite to the first electrode; a photoactive layer provided between the first electrode and the second electrode; and an electron transfer layer provided between the photoactive layer and the first electrode, wherein the electron transfer layer comprises a zinc oxide (ZnO) nanoparticle having one or more amine groups bonding to a surface thereof, and a method for manufacturing the same.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 19, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Younshin Kim, Songrim Jang, Doowhan Choi, Jung Ha Park, Seung Jun Yoo
  • Patent number: 11283033
    Abstract: The present specification relates to a composition for an organic material layer of an organic solar cell including an electron donor including a polymer including a first unit represented by Chemical Formula 1, a second unit represented by Chemical Formula 2, and a third unit represented by Chemical Formula 3 or 4; and a non-fullerene-based electron acceptor, and an organic solar cell including the composition.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: March 22, 2022
    Inventors: Jiyoung Lee, Doowhan Choi, Bogyu Lim, Ji Hoon Kim
  • Publication number: 20220085292
    Abstract: The present invention relates to an organic light emitting device including: an anode; a cathode; and a light emitting light provided between the anode and the cathode, in which a first organic material layer including a composition which includes a compound of Chemical Formula 1 or a cured product thereof is included between the light emitting layer and the anode, and a second organic material layer including a composition which includes a copolymer of Chemical Formula 2 or a cured product thereof is included between the first organic material layer and the light emitting layer, Wherein all the variables are described herein.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 17, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Dowon Lim, Ji Hoon Kim, Juhwan Kim, Donghwan Lee, Jaesoon Bae, Jaechol Lee, Songrim Jang, Doowhan Choi, Keunsoo Lee, Jumin Lee
  • Publication number: 20220064101
    Abstract: The present disclosure provides a novel heterocyclic compound represented by the following Chemical Formula 1, and an organic light emitting device comprising the same, in Chemical Formula 1, L, L1, L2, X1, X2, R?1 to R?3, R?1 to R?3, n1 to n3, m1 to m3, Ar1 and Ar2 are described herein.
    Type: Application
    Filed: July 20, 2020
    Publication date: March 3, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jiyoung Lee, Jaesoon Bae, Jaechol Lee, Doowhan Choi, Sungkyoung Kang, Hyeonah Shin, Yeonhui Yi, Min Suk Jung