Patents by Inventor Jun Su BYEON

Jun Su BYEON 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).

  • Organic light emitting device and display device using the same
    Patent number: 11956980
    Abstract: Discussed is an organic light emitting device in which a light emitting layer includes a host and different kinds of dopants, the fluorescent dopant is formed of a material having energy level properties facilitating thermally activated delayed fluorescence (TADF), and thus energy is concentratedly transferred to the fluorescent dopant so as to increase luminous efficacy of a single color.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: April 9, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Gyeong-Woo Kim, Hong-Seok Choi, Seung-Ryong Joung, Jun-Ho Lee, Yoon-Deok Han, Hee-Su Byeon
  • Biodegradable polyester resin composition and biodegradable polyester molded article including the same
    Patent number: 11898031
    Abstract: An eco-friendly biodegradable polyester resin composition includes: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid; and 5000 ppm to 20000 ppm of a hydrophilic regulator having a molecular weight of 400 to 1300.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: February 13, 2024
    Assignee: Ecovance Co. Ltd.
    Inventors: Kyung Youn Kim, Seong Dong Kim, Hoon Kim, Jun Su Byeon, Joo Young Jung, Ji Yeon Ryu
  • Biodegradable molded article and biodegradable polyester resin composition
    Patent number: 11898004
    Abstract: An eco-friendly biodegradable molded article, which includes a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a biodegradability per hydrolysis degree of the biodegradable molded article is 1.35 or more, wherein the biodegradability per hydrolysis degree is obtained by dividing a biodegradability after nine weeks by a hydrolysis degree after one week, wherein the biodegradability after nine weeks and the hydrolysis degree after one week are measured by a measurement method below.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: February 13, 2024
    Assignee: Ecovance Co. Ltd.
    Inventors: Kyung Youn Kim, Seong Dong Kim, Hoon Kim, Jun Su Byeon
  • BIODEGRADABLE POLYESTER RESIN COMPOSITION, METHOD OF PREPARING THE SAME AND BIODEGRADABLE MOLDED ARTICLE INCLUDING BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20240002656
    Abstract: An eco-friendly biodegradable polyester resin composition includes a polyester resin that includes a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a biodegradability per aliphatic carboxylic acid is 1.7 or more, the biodegradability per aliphatic carboxylic acid being a value obtained by dividing a biodegradability after 9 weeks by a ratio of the aliphatic dicarboxylic acid to the total dicarboxylic acid, and the biodegradability after 9 weeks being 85% or more.
    Type: Application
    Filed: May 19, 2023
    Publication date: January 4, 2024
    Inventors: Seong Dong KIM, Kyung Youn KIM, Joo Young JUNG, Ji Yeon RYU, Hoon KIM, Jun Su BYEON, Eun Sun JOENG
  • BIODEGRADABLE POLYESTER RESIN COMPOSITION, BIODEGRADABLE POLYESTER FILM INCLUDING THE SAME AND BIODEGRADABLE MOLDED ARTICLE INCLUDING BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20230399507
    Abstract: An eco-friendly biodegradable polyester resin composition, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a soft segment ratio of the polyester resin is 0.21 to 0.29, and wherein the soft segment ratio is a ratio of a diol, bonded between the aliphatic dicarboxylic acid and the aliphatic dicarboxylic acid, among the diols.
    Type: Application
    Filed: May 19, 2023
    Publication date: December 14, 2023
    Inventors: Seong Dong KIM, Kyung Youn KIM, Hoon KIM, Kyoung Hwan YOU, Jun Su BYEON, Eun Sun JOENG
  • BIODEGRADABLE MOLDED ARTICLE AND BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20230374204
    Abstract: An eco-friendly biodegradable molded article, which includes a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a biodegradability per hydrolysis degree of the biodegradable molded article is 1.35 or more, wherein the biodegradability per hydrolysis degree is obtained by dividing a biodegradability after nine weeks by a hydrolysis degree after one week, wherein the biodegradability after nine weeks and the hydrolysis degree after one week are measured by a measurement method below.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Kyung Youn KIM, Seong Dong KIM, Hoon KIM, Jun Su BYEON
  • BIODEGRADABLE MOLDED ARTICLE AND BIODEGRADABLE POLYESTER RESIN COMPOSITION AND BIODEGRADABLE POLYESTER FILM
    Publication number: 20230374296
    Abstract: An eco-friendly biodegradable molded article which includes a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid and has a wet hardness reduction rate of 12% to 25%.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Seong Dong KIM, Kyung Youn KIM, Hoon KIM, Jun Su BYEON, Eun Sun JOENG
  • BIODEGRADABLE POLYESTER RESIN COMPOSITION AND BIODEGRADABLE POLYESTER MOLDED ARTICLE INCLUDING THE SAME
    Publication number: 20230374298
    Abstract: An eco-friendly biodegradable polyester resin composition includes: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid; and 5000 ppm to 20000 ppm of a hydrophilic regulator having a molecular weight of 400 to 1300.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Kyung Youn KIM, Seong Dong KIM, Hoon KIM, Jun Su BYEON, Joo Young JUNG, Ji Yeon RYU
  • BIODEGRADABLE POLYESTER RESIN COMPOSITION AND BIODEGRADABLE MOLDED ARTICLE INCLUDING BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20230374294
    Abstract: An eco-friendly biodegradable polyester resin composition includes a polyester resin that includes a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein the first weight swelling rate of the biodegradable polyester resin composition is 4% to 20%.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Kyung Youn KIM, Seong Dong KIM, Hoon KIM, Jun Su BYEON, Eun Sun JOENG
  • BIODEGRADABLE MOLDED ARTICLE AND BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20230374297
    Abstract: An eco-friendly biodegradable molded article, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein, when continuously irradiated with ultraviolet rays from a UVA 340 ultraviolet light lamp at an intensity of 0.75 W/m2, a tensile strength decrease rate from the beginning of the ultraviolet irradiation to 1 day ranges from 5% to 40%.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Seong Dong KIM, Kyung Youn KIM, Hoon KIM, Jun Su BYEON, Hye Jin KIM
  • BIODEGRADABLE POLYESTER RESIN COMPOSITION, BIODEGRADABLE POLYESTER FILM INCLUDING THE SAME AND BIODEGRADABLE MOLDED ARTICLE INCLUDING BIODEGRADABLE POLYESTER RESIN COMPOSITION
    Publication number: 20230374203
    Abstract: Disclosed is an eco-friendly biodegradable polyester resin composition, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein an alternating ratio of the polyester resin is 0.3 to 0.7, wherein the alternating ratio is a ratio of a diol, bonded between the aromatic dicarboxylic acid and the aliphatic dicarboxylic acid, among the diol.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 23, 2023
    Inventors: Seong Dong KIM, Kyung Youn KIM, Hoon KIM, Jun Su BYEON, Eun Sun JOENG