Patents by Inventor Yongseong CHA

Yongseong CHA 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).

  • MICRO-SEPARATOR INCLUDING 3D ORDERED NANOSHELL STRUCTURE OF CERAMIC-POLYMER COMPOSITE FOR GAS CHROMATOGRAPHY, METHOD FOR FABRICATING THE SAME AND METHOD FOR SEPARATING GAS MIXTURE USING THE SAME
    Publication number: 20240100505
    Abstract: A micro-separator for gas chromatography includes a base substrate having a trench defining a micro-column, and a three-dimensional (3D) porous ceramic-polymer composite disposed in the micro-column and having pores that three-dimensionally connected to each other with periodicity. The 3D porous ceramic-polymer composite includes a ceramic nano-structure, which forms an array of three-dimensionally arranged nano-shells, and a reaction-activating layer combined on a surface of the ceramic nano-structure and including a polymeric reaction-activating material. A thickness of the 3D porous ceramic-polymer composite is 10 ?m to 20 ?m, a column length of the 3D porous ceramic-polymer composite is 30 cm to 70 cm, and a shell thickness of the ceramic nano-structure is 20 nm to 60 nm. The micro-separator may have improved separation performance and durability.
    Type: Application
    Filed: July 8, 2022
    Publication date: March 28, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Seokwoo JEON, Kisun KIM, Caiyan QIN, Yongseong CHA