Patents by Inventor Ju-Myung SONG

Ju-Myung SONG 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).

  • Crosslinked speek cation exchange membrane having improved chemical stability by radiation and method of preparing the same
    Patent number: 9790339
    Abstract: Provided is a method of preparing a crosslinked sulfonated poly(ether ether ketone) (SPEEK) cation exchange membrane including: preparing a crosslinker mixture of a first crosslinker containing two or more vinyl oxy groups and a second crosslinker containing three or more vinyl groups; preparing a mother liquor containing the crosslinker mixture, a SPEEK polymer substituted with sodium, and a solvent; and casting the mother liquor and then irradiating radiation thereon.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 17, 2017
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Junhwa Shin, Joon Yong Sohn, Ju-Myung Song, Sun-Young Lee, Hyun-Su Woo
  • CROSSLINKED SPEEK CATION EXCHANGE MEMBRANE HAVING IMPROVED CHEMICAL STABILITY BY RADIATION AND METHOD OF PREPARING THE SAME
    Publication number: 20150133570
    Abstract: Provided is a method of preparing a crosslinked sulfonated poly(ether ether ketone) (SPEEK) cation exchange membrane including: preparing a crosslinker mixture of a first crosslinker containing two or more vinyl oxy groups and a second crosslinker containing three or more vinyl groups; preparing a mother liquor containing the crosslinker mixture, a SPEEK polymer substituted with sodium, and a solvent; and casting the mother liquor and then irradiating radiation thereon.
    Type: Application
    Filed: May 28, 2014
    Publication date: May 14, 2015
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Junhwa SHIN, Joon Yong SOHN, Ju-Myung SONG, Sun-Young LEE, Hyun-Su WOO