Patents by Inventor Deug-Soo KIM

Deug-Soo 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).

  • Polytrimethylene ether glycol and preparation method thereof
    Patent number: 11608413
    Abstract: Provided are a polytrimethylene ether glycol and a preparation method thereof, wherein various by-products and oligomers may be effectively removed from a polytrimethylene ether glycol product without exposing to a high temperature for a long period of time, and therefore, a molecular weight variation may be reduced due to the removal of various by-products and low molecular weight oligomers.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: March 21, 2023
    Inventors: Jae-Il Chung, Hyun Jun Cho, Han-Seok Kim, Deug-Soo Kim
  • POLYTRIMETHYLENE ETHER GLYCOL AND PREPARATION METHOD THEREOF
    Publication number: 20200277437
    Abstract: Provided are a polytrimethylene ether glycol and a preparation method thereof, wherein various by-products and oligomers may be effectively removed from a polytrimethylene ether glycol product without exposing to a high temperature for a long period of time, and therefore, a molecular weight variation may be reduced due to the removal of various by-products and low molecular weight oligomers.
    Type: Application
    Filed: September 11, 2018
    Publication date: September 3, 2020
    Inventors: Jae-IL CHUNG, Hyun Jun CHO, Han-Seok KIM, Deug-Soo KIM