Patents by Inventor Moon-Seog Jang

Moon-Seog Jang 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).

  • Preparation of asymmetric polyethylene hollow fiber membrane
    Patent number: 7364659
    Abstract: A porous polyethylene hollow fiber membrane having a pore-size gradient across the inner and outer surfaces thereof is prepared by introducing, during the cooling step of a melt-spun polyethylene hollow fiber, a nitrogen flow and a solvent having a boiling point in the range of 30 to 80° C. to the inner and outer surfaces of the melt-spun hollow fiber, respectively.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: April 29, 2008
    Assignee: KMS Co., Ltd.
    Inventors: Moon-Seog Jang, Sung-Soo Kim, Myung-Nam Han, Jin-Ho Kim, Min-Soo Park
  • Preparation of asymmetric polyethylene hollow fiber membrane
    Publication number: 20070045175
    Abstract: A porous polyethylene hollow fiber membrane having a pore-size gradient across the inner and outer surfaces thereof is prepared by introducing, during the cooling step of a melt-spun polyethylene hollow fiber, a nitrogen flow and a solvent having a boiling point in the range of 30 to 80° C. to the inner and outer surfaces of the melt-spun hollow fiber, respectively.
    Type: Application
    Filed: August 24, 2005
    Publication date: March 1, 2007
    Inventors: Moon-Seog Jang, Sung-Soo Kim, Myung-Nam Han, Jin-Ho Kim, Min-Soo Park