Patents by Inventor Hye Yeon LEE

Hye Yeon 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).

  • Patent number: 11814480
    Abstract: The present invention provides a method for producing a polyamide with controlled activator addition, and a polyamide produced thereby, the method allowing a polymerization conversion rate and a polydispersity index (PDI) to be enhanced by controlling the addition of an activator so as to prevent a gelation phenomenon that occurs during anionic polymerization.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 14, 2023
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon Lee, Do Kyoung Kim, Seung Hoe Do, Jin Seo Lee, Kyung Ho Kwon, Dae Hak Kim, Kyoung Won Yim
  • Publication number: 20230295095
    Abstract: Provided are novel fused-heterocyclyl-carbonohydrazonoyl dicyanide compounds and uses thereof.
    Type: Application
    Filed: June 18, 2021
    Publication date: September 21, 2023
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ae Nim PAE, Yun Kyung KIM, Sang Min LIM, Sungsu LIM, Haeun LEE, Woo Seung SON, Hye Yeon LEE
  • Publication number: 20230278963
    Abstract: Provided are novel oxopyridazinyl-phenyl-carbonohydrazonoyl dicyanide compounds and uses thereof.
    Type: Application
    Filed: June 18, 2021
    Publication date: September 7, 2023
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ae Nim PAE, Yun Kyung KIM, Sang Min LIM, Sungsu LIM, Haeun LEE, Woo Seung SON, Hye Yeon LEE
  • Publication number: 20230278965
    Abstract: Provided are novel carbonohydrazonoyl dicyanide compounds including two or more aryl or heteroaryl groups connected via a linker and uses thereof.
    Type: Application
    Filed: June 18, 2021
    Publication date: September 7, 2023
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ae Nim PAE, Yun Kyung KIM, Sang Min LIM, Sungsu LIM, Haeun LEE, Woo Seung SON, Hye Yeon LEE
  • Patent number: 11718713
    Abstract: The present invention relates to a method for producing a polyamide by coordinated anionic ring-opening polymerization and a polyamide produced thereby, wherein metal alkoxide as an initiator and metal hydride as a catalyst are added to enable polymerization having a narrow molecular weight distribution and uniform molecular weight within a short polymerization reaction time at a low temperature, without a separate vacuum process, as compared with an existing polymerization method.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 8, 2023
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon Lee, Dae Hak Kim, Seung Hoe Do, Jin Seo Lee, Kyung Ho Kwon, Kyoung Won Yim, Do Kyoung Kim
  • Publication number: 20220396553
    Abstract: The present invention relates to novel hydrazone derivatives in which a terminal amine group is substituted with an aryl group or a heteroaryl group, and uses thereof.
    Type: Application
    Filed: December 26, 2018
    Publication date: December 15, 2022
    Inventors: Ae Nim PAE, Yun Kyung KIM, Sang Min LIM, Sungsu LIM, Jihye SEONG, Jae Wook LEE, Ji Yeon SONG, Seulgi SHIN, Hyean Jeong JEONG, Woo Seung SON, Haeun LEE, Da Mi LIM, Seok Kyu KIM, Jee Yun AHN, Chae Won KIM, Ashwini Machhindra LONDHE, Lizaveta GOTINA, Hyojin KIM, Hye Yeon LEE, Nam Gyung KIM, Eunji CHA, Kunhee KIM, Ji Woong LIM
  • Publication number: 20220372221
    Abstract: The present invention relates to a process for preparing a polyamide by anionic polymerization and to a polyamide prepared thereby. A polyamide having an ultra-high molecular weight can be easily prepared by the process for preparing a polyamide according to an embodiment of the present invention. In addition, the polyamide having an ultra-high molecular weight according to an embodiment of the present invention has excellent mechanical properties, particularly, impact resistance.
    Type: Application
    Filed: November 27, 2020
    Publication date: November 24, 2022
    Inventors: Hye Yeon LEE, Jinseo LEE, Kyungho KWON, Seung Hoe DO, Dokyoung KIM
  • Patent number: 11433639
    Abstract: The present invention relates to a lightweight sandwich steel sheet using polyamide, and more particularly, to a lightweight sandwich steel sheet using polyamide and a manufacturing method therefor, the steel sheet being usable at a wider temperature range than that of a conventional sandwich steel sheet and, particularly, having excellent adhesion at a low temperature and remarkably increasing stability and lightweight property.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 6, 2022
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Dae Hak Kim, Seung Hoe Do, Jin Seo Lee, Kyoung Won Yim, Kyung Ho Kwon, Do Kyoung Kim, Hye Yeon Lee
  • Publication number: 20210002424
    Abstract: Provided are a method for preparing a polyamide by using a molecular weight controller having a double active group in anionic ring-opening copolymerization of a polyamide, thereby enabling molecular weight to be controlled through the addition reaction of the molecular weight controller, and a polyamide prepared thereby.
    Type: Application
    Filed: October 29, 2018
    Publication date: January 7, 2021
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Do Kyoung KIM, Jin Seo LEE, Kyung Ho KWON, Seung Hoe DO, Hye Yeon LEE, Kyoung Won YIM, Dae Hak KIM
  • Publication number: 20200385521
    Abstract: Provided are a method for producing a polyamide including an amide-based molecular weight controller and a polyamide produced thereby, wherein the amide-based molecular weight controller may easily control the molecular weight of the polyamide to have a narrow molecular weight distribution so as to prevent an increase in the molecular weight due to a basic intermediate produced in anionic polymerization and a side reaction generated under a high-temperature polymerization condition.
    Type: Application
    Filed: October 30, 2018
    Publication date: December 10, 2020
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Kyung Ho KWON, Seung Hoe DO, Jin Seo LEE, Dae Hak KIM, Kyoung Won YIM, Do Kyoung KIM, Hye Yeon LEE
  • Publication number: 20200385520
    Abstract: Provided are a method for producing a polyamide using an end-capping agent and a polyamide produced thereby, wherein the method is an eco-friendly process method without using a solvent as a catalyst and may prepare, by using an end-capping agent for suppressing side reaction, a polymer having a uniform molecular weight and a high conversion rate at a low temperature within a short polymerization time in comparison with a conventional polymerization method.
    Type: Application
    Filed: October 29, 2018
    Publication date: December 10, 2020
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Kyoung Won YIM, Seung Hoe DO, Jin Seo LEE, Hye Yeon LEE, Dae Hak KIM, Do Kyoung KIM, Kyung Ho KWON
  • Publication number: 20200384725
    Abstract: The present invention relates to a lightweight sandwich steel sheet using polyamide, and more particularly, to a lightweight sandwich steel sheet using polyamide and a manufacturing method therefor, the steel sheet being usable at a wider temperature range than that of a conventional sandwich steel sheet and, particularly, having excellent adhesion at a low temperature and remarkably increasing stability and lightweight property.
    Type: Application
    Filed: November 1, 2018
    Publication date: December 10, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Dae Hak KIM, Seung Hoe DO, Jin Seo LEE, Kyoung Won YIM, Kyung Ho KWON, Do Kyoung KIM, Hye Yeon LEE
  • Publication number: 20200277439
    Abstract: The present invention relates to a method for producing a polyamide by coordinated anionic ring-opening polymerization and a polyamide produced thereby, wherein metal alkoxide as an initiator and metal hydride as a catalyst are added to enable polymerization having a narrow molecular weight distribution and uniform molecular weight within a short polymerization reaction time at a low temperature, without a separate vacuum process, as compared with an existing polymerization method.
    Type: Application
    Filed: October 29, 2018
    Publication date: September 3, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon LEE, Dae Hak KIM, Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Kyoung Won YIM, Do Kyoung KIM
  • Publication number: 20200277438
    Abstract: The present invention provides a method for producing a polyamide with controlled activator addition, and a polyamide produced thereby, the method allowing a polymerization conversion rate and a polydispersity index (PDI) to be enhanced by controlling the addition of an activator so as to prevent a gelation phenomenon that occurs during anionic polymerization.
    Type: Application
    Filed: October 29, 2018
    Publication date: September 3, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon LEE, Do Kyoung KIM, Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Dae Hak KIM, Kyoung Won YIM
  • Publication number: 20200270397
    Abstract: Provided is a method for preparing a polyamide by an anionic polymerization reaction, wherein lactam, and based on 100 parts by weight of the entire lactam, 0.01 parts by weight to 20 parts by weight of an alkali metal as an initiator, 0.3 parts by weight to 10 parts by weight of a molecular weight controller, and 0.002 parts by weight to 1.0 part by weight of carbon dioxide as an activator may be included.
    Type: Application
    Filed: November 5, 2018
    Publication date: August 27, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Do Kyoung KIM, Hye Yeon LEE, Kyoung Won YIM