Patents by Inventor Yong Soo Kang

Yong Soo Kang 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 porous membranes utilizing water or organic vapor adsorption
    Patent number: 5708040
    Abstract: The present invention describes a method for preparing an asymmetric porous membrane by a dry-wet phase inversion method, which comprises contacting a cast or spun polymer solution with water or organic vapor prior to immersing into the non-solvent precipitation medium, whereby said water or organic vapor is adsorbed onto the cast or spun polymer solution. Higher permeability and excellent rejection ability can be obtained, due to the high porosity and uniform pore size of said membranes according to the present invention.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: January 13, 1998
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae Min Hong, Seong Ryong Ha, Hyun Chae Park, Yong Soo Kang, Kyu Hong Ahn