Patents by Inventor Sung Wook Choo

Sung Wook Choo 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).

  • Flexible self-expandable stent and method for making the same
    Patent number: 6027525
    Abstract: A flexible self-expandable stent comprises a plurality of radially cylindrical elastic units spaced at fixed intervals, a cylindrical cover fixing member which sheaths the cylindrical elastic units, and a reverse flow preventing valve. The reverse flow preventing valve is attached to the inner wall of the stent, for preventing food-stuffs or fluids from flowing from a downstream side to an upstream side. The flexible self-expandable stent exhibits improved flexibility so that when the stent is disposed in a curved lumina, it can flexibly correspond to the curvature of the lumina and prevent the reverse flow of foodstuffs or fluids by use of the reverse flow preventing valve.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: February 22, 2000
    Assignee: Samsung Electronics., Ltd.
    Inventors: Soo Won Suh, In Young Kim, In Wook Choo, Young Soo Do, Sung Wook Choo