Patents by Inventor Hyeon Sun CHOI

Hyeon Sun 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).

  • Patent number: 10658641
    Abstract: The present invention relates to a separator comprising a coating layer and a battery using the same, the separator having improved adhesive force to an electrode, thereby minimizing the rate of thickness change. More specifically, the present invention relates to a separator having a coating layer on one or both surfaces of a base film, the coating layer comprising an acrylic-based copolymer having a glass transition temperature of less than or equal to 80° C. and an inorganic particle, so as to have improved adhesive force and heat resistance, thereby being applicable in electrochemical batteries of various sizes and having excellent thermal stability and dimensional stability.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 19, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Byung Min Lee, Ha Na Kim, Nam Hyo Kim, Myung Kook Park, Hyeon Sun Choi
  • Patent number: 10211441
    Abstract: A heat resistant porous layer composition for a separator for an electrochemical battery includes a compound represented by Formula 1, a polyvinylidene fluoride (PVdF)-based polymer, the PVdF-based polymer including one or more of a PVdF-based homopolymer or a PVdF-hexafluoropropylene-based copolymer in which a unit originating from hexafluoropropylene is present in an amount of 15 wt % or less based on the total weight of the PVdF-hexafluoropropylene-based copolymer, the PVdF-hexafluoropropylene-based copolymer having a weight average molecular weight of 600,000 g/mol or more, an initiator; and a solvent, wherein Formula 1 is defined herein.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: February 19, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin Kyu Park, Hyeon Sun Choi, Dae Hyun Hong, Im Hyuck Bae
  • Patent number: 10205147
    Abstract: A heat resistant porous layer composition for a separator of an electrochemical battery includes a compound represented by Formula 1, an initiator, and a solvent, wherein Formula 1 is defined herein.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: February 12, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin Kyu Park, Jong Sup Choi, Hyeon Sun Choi
  • Publication number: 20160301055
    Abstract: The present invention relates to a separator comprising a coating layer and a battery using the same, the separator having improved adhesive force to an electrode, thereby minimizing the rate of thickness change. More specifically, the present invention relates to a separator having a coating layer on one or both surfaces of a base film, the coating layer comprising an acrylic-based copolymer having a glass transition temperature of less than or equal to 80° C. and an inorganic particle, so as to have improved adhesive force and heat resistance, thereby being applicable in electrochemical batteries of various sizes and having excellent thermal stability and dimensional stability.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 13, 2016
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Byung Min LEE, Ha Na KIM, Nam Hyo KIM, Myung Kook PARK, Hyeon Sun CHOI
  • Publication number: 20160190537
    Abstract: A heat resistant porous layer composition for a separator of an electrochemical battery includes a compound represented by Formula 1, an initiator, and a solvent, wherein Formula 1 is defined herein.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 30, 2016
    Inventors: Jin Kyu PARK, Jong Sup CHOI, Hyeon Sun CHOI
  • Publication number: 20160190536
    Abstract: A heat resistant porous layer composition for a separator for an electrochemical battery includes a compound represented by Formula 1, a polyvinylidene fluoride (PVdF)-based polymer, the PVdF-based polymer including one or more of a PVdF-based homopolymer or a PVdF-hexafluoropropylene-based copolymer in which a unit originating from hexafluoropropylene is present in an amount of 15 wt % or less based on the total weight of the PVdF-hexafluoropropylene-based copolymer, the PVdF-hexafluoropropylene-based copolymer having a weight average molecular weight of 600,000 g/mol or more, an initiator; and a solvent, wherein Formula 1 is defined herein.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 30, 2016
    Inventors: Jin Kyu PARK, Hyeon Sun CHOI, Dae Hyun HONG, Im Hyuck BAE