Patents by Inventor Won Kook Choi

Won Kook Choi 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).

  • Process for modifying surfaces of polymers, and polymers having surfaces modified by such process
    Patent number: 5783641
    Abstract: The present invention relates to a process for modifying a polymer surface by irradiating ion particles with energy on a polymer surface, while blowing the reactive gas directly on the polymer surface under vacuum condition, to decrease the wetting angle of the polymer surface. The process for modifying the polymer surface according to the present invention can be widely used in the application fields of polymers because it provides effects of increasing the spreading of aqueous dyestuffs, increasing adhesive strength with other materials and inhibition of light scattering by decreasing the wetting angle of the polymer surface.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: July 21, 1998
    Assignee: Korea Institute of Science and Technology
    Inventors: Seok-Keun Koh, Hyung-Jin Jung, Seok-Kyun Song, Won-Kook Choi, Young-Soo Yoon, Jun-Sik Cho