Patents by Inventor Sunhang Cho

Sunhang Cho 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).

  • Polymer membrane having a high permeability for alkanol
    Patent number: 5726212
    Abstract: An alkanol permeation polymer membrane prepared by dissolving biocompatible, non-allergenic polymer capable of being dissolved in polar organic solvent in methylene chloride to prepare a first solution, dissolving cellulose or glycol type polyol compounds in cosolvent composed of alkanol and methylene chloride to prepare a second solution, and mixing the first solution with the second solution, casting the mixed solution on a glass plate with a controlled thickness and evaporating may control the release of drugs effectively.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: March 10, 1998
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Soonhong Yuk, Sunhang Cho, Haibang Lee