Patents by Inventor Hae-Souk Cho

Hae-Souk Cho 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).

  • Polyketone polymerization catalyst
    Patent number: 10428096
    Abstract: Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: October 1, 2019
    Assignees: HYOSUNG CHEMICAL CORPORATION, ST PHARM CO., LTD.
    Inventors: Jae Yoon Shim, Sun Kue Kim, Hae Souk Cho, Ji Hwan Choi, Geun Jho Lim, Sun Ki Chang, Min Kyu Kim, In Hyeok Baek
  • POLYKETONE POLYMERIZATION CATALYST
    Publication number: 20160333036
    Abstract: Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.
    Type: Application
    Filed: July 16, 2014
    Publication date: November 17, 2016
    Inventors: Jae Yoon SHIM, Sun Kue KIM, Hae Souk CHO, Ji Hwan CHOI, Geun Jho LIM, Sun Ki CHANG, Min Kyu KIM, In Hyeok BAEK
  • Process for preparing polyketone
    Patent number: 7803897
    Abstract: The present invention relates to a process for preparing polyketone with improved catalytic activity and intrinsic viscosity, and specifically a process for preparing polyketone, using a mixed solvent of 40 to 60 mol % acetic acid and 40 to 60 mol % water, as a liquid medium, and the precursor of palladium chloride-1,3-bis[di(methoxyphenyl)phosphino]propane, as a catalyst component.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: September 28, 2010
    Assignee: Hyosung Corporation
    Inventors: Jean-Young Jang, Jong-In Choi, Hae-Souk Cho, Jae-Yoon Shim, Sung-Kyun Yoon, Heon-Su Kim, Toniolo Luigi, Vavasori Andrea
  • Process for preparing polyketone
    Publication number: 20080161531
    Abstract: The present invention relates to a process for preparing polyketone with improved catalytic activity and intrinsic viscosity, and specifically a process for preparing polyketone, using a mixed solvent of 40 to 60 mol % acetic acid and 40 to 60 mol % water, as a liquid medium, and the precursor of palladium chloride-1,3-bis[di(methoxyphenyl)phosphino]propane, as a catalyst component.
    Type: Application
    Filed: July 12, 2007
    Publication date: July 3, 2008
    Applicant: HYOSUNG Corporation
    Inventors: Jean-Young Jang, Jong-In Choi, Hae-Souk Cho, Jae-Yoon Shim, Sung-Kyun Yoon, Heon-Su Kim, Toniolo Luigi, Vavasori Andrea
  • Process for producing polyketone
    Publication number: 20080058493
    Abstract: The present invention relates to a process for preparing polyketone with improved catalytic activity and intrinsic viscosity, and specifically a process for preparing polyketone wherein an organometallic complex comprising acetate-palladium and 1,3-bis[bis(2-methoxy-5-methylphenyl)phosphino]propane is used as a catalyst component, and a mixed solvent of 70 to 90 vol % of acetic acid and 10 to 30 vol % of water is used as a liquid medium.
    Type: Application
    Filed: February 15, 2007
    Publication date: March 6, 2008
    Applicant: HYOSUNG CORPORATION
    Inventors: Ik-Hyeon Kwon, Hae-Souk Cho, Jung-Ho Kim