Patents by Inventor Ju Hyeon Jeong

Ju Hyeon Jeong 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).

  • Method for preparing polyetherketoneketone and polyetherketoneketone prepared thereby
    Patent number: 11919999
    Abstract: Provided are a method for preparing a polyetherketoneketone and a polyetherketoneketone prepared thereby, wherein, at the time of a polymerization reaction, nitrogen gas is blown into a liquid reaction medium while stirring, thereby quickly removing hydrochloric acid, which is a by-product generated during the reaction, and preventing aggregation of resin particles, thus suppressing the generation of scales.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: March 5, 2024
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Kwang Seok Jeong, Min Sung Kim, Jae Heon Kim, Ju Young Park, Cho Hee Ahn, Byeong Hyeon Lee, Sang Hyun Cho
  • REVERSIBLE DNA INFORMATION HIDING METHOD BASED ON PREDICTION-ERROR EXPANSION AND HISTROGRAM SHIFTING
    Publication number: 20190251268
    Abstract: Disclosed is a reversible DNA information hiding method based on prediction-error expansion and histogram shifting, the method being capable of false start codon prevention, original sequence length preservation, high watermark capacity, and blind detection based on prediction-error expansion and histogram shifting without biological mutation.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 15, 2019
    Inventors: Sukhwan Lee, Eungju Lee, Dong Yeop Lee, Ju Hyeon Jeong