Patents by Inventor Kwang Hyon KIM

Kwang Hyon KIM 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: 11097963
    Abstract: The present disclosure relates to a method for treating a solvent in wastewater generated in a polycarbonate production process. More specifically, the present disclosure relates to a method for treating a solvent in wastewater generated in a polycarbonate production process, which can easily recover a high purity solvent regardless of the concentration of the solvent by using a membrane distillation method to reuse it, and contribute to energy savings.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 24, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Youna Kim, Dong Kwon Lee, Jeong Seok Lee, Kwang Hyon Kim, Choongkyun Yeom, Seok Ki Kang, Kyehoon Kim
  • Patent number: 10894867
    Abstract: The present invention relates to a manufacturing method of a super absorbent polymer. More specifically, the present invention relates to a manufacturing method of a super absorbent polymer capable of reducing energy, reducing a process cost, and reducing a load on a device, at the time of drying due to reduction in an amount of water used during reassembly of fines, while manufacturing a super absorbent polymer exhibiting a reduced generation amount of re-fines and having excellent physical properties.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 19, 2021
    Inventors: Sung Soo Park, Jeong Kug Cho, Yoon Jae Min, Gicheul Kim, Se Won Baek, Kwang Hyon Kim
  • Publication number: 20200317540
    Abstract: The present disclosure relates to a method for treating a solvent in wastewater generated in a polycarbonate production process. More specifically, the present disclosure relates to a method for treating a solvent in wastewater generated in a polycarbonate production process, which can easily recover a high purity solvent regardless of the concentration of the solvent by using a membrane distillation method to reuse it, and contribute to energy savings.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 8, 2020
    Inventors: Youna KIM, Dong Kwon LEE, Jeong Seok LEE, Kwang Hyon KIM, Choongkyun YEOM, Seok Ki KANG, Kyehoon KIM
  • Publication number: 20200247958
    Abstract: The present invention relates to a manufacturing method of a super absorbent polymer. More specifically, the present invention relates to a manufacturing method of a super absorbent polymer capable of reducing energy, reducing a process cost, and reducing a load on a device, at the time of drying due to reduction in an amount of water used during reassembly of fines, while manufacturing a super absorbent polymer exhibiting a reduced generation amount of re-fines and having excellent physical properties.
    Type: Application
    Filed: December 3, 2018
    Publication date: August 6, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sung Soo Park, Jeong Kug Cho, Yoon Jae Min, Gicheul Kim, Se Won Baek, Kwang Hyon Kim
  • Patent number: 10577462
    Abstract: The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: March 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Woo Sung Hwang, Jong-Ku Lee, Seung Young Park, Dong Kwon Lee, Hyun Ju Cho, Kwang Hyon Kim, Yong Hee An, Jun Wye Lee
  • Publication number: 20170275423
    Abstract: The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.
    Type: Application
    Filed: November 4, 2015
    Publication date: September 28, 2017
    Inventors: Woo Sung HWANG, Jong-Ku LEE, Seung Young PARK, Dong Kwon LEE, Hyun Ju CHO, Kwang Hyon KIM, Yong Hee AN, Jun Wye LEE
  • Patent number: 9434833
    Abstract: Disclosed are a bulk PVC composition and a bulk PVC polymerization method using the same. According to the present invention, a bulk PVC composition that may effectively prevent generation of fine particles and scale (adhering to a reactor wall) during bulk polymerization and may be prepared without a post-treatment process of an antistatic agent added to easily isolate fine particles after bulk PVC polymerization, and a method and apparatus for polymerizing the same may be provided.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 6, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Dong Kwon Lee, Kwang Hyon Kim, Bo Hee Park, Se Woong Lee, Jin Hyuck Ju
  • Publication number: 20160017116
    Abstract: Disclosed are a bulk PVC composition and a bulk PVC polymerization method using the same. According to the present invention, a bulk PVC composition that may effectively prevent generation of fine particles and scale (adhering to a reactor wall) during bulk polymerization and may be prepared without a post-treatment process of an antistatic agent added to easily isolate fine particles after bulk PVC polymerization, and a method and apparatus for polymerizing the same may be provided.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 21, 2016
    Inventors: Dong Kwon LEE, Kwang Hyon KIM, Bo Hee PARK, Se Woong LEE, Jin Hyuck JU