Patents by Inventor Doo-hee Yoon

Doo-hee Yoon 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).

  • Polyurethane foam dressing with improved moisturization
    Patent number: 7777091
    Abstract: The present invention relates to a polyurethane foam dressing material with improved moisturizing rate. More precisely, the present invention relates to a hydrophilic dressing material in which a wound contact layer (10) having a sponge structure composed of multiple open cells (12) and pores (15) passing through the cells (12) is laminated with a protective film (20). The lamination is characteristically performed at 150˜250° C. under a pressure of preferably 0.25˜1 kgf/cm2, the moisturizing rate of the wound contact layer (10) is 300˜1200% and the pore area (membrane opening) takes 10˜35% of the total cell area.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: August 17, 2010
    Assignee: Biopol Co., Ltd.
    Inventors: Jong-wook Park, Hyun-jung Kim, Kab-keun Kim, Doo-hee Yoon
  • Polyurethane foam dressing with improved moisturization
    Publication number: 20080146983
    Abstract: The present invention relates to a polyurethane foam dressing material with improved moisturizing rate. More precisely, the present invention relates to a hydrophilic dressing material in which a wound contact layer (10) having a sponge structure composed of multiple open cells (12) and pores (15) passing through the cells (12) is laminated with a protective film (20). The lamination is characteristically performed at 150˜250° C. under a pressure of preferably 0.25˜1 kgf/cm2, the moisturizing rate of the wound contact layer (10) is 300˜1200% and the pore area (membrane opening) takes 10˜35% of the total cell area.
    Type: Application
    Filed: January 26, 2007
    Publication date: June 19, 2008
    Applicant: BIOPOL CO., LTD.
    Inventors: Jong-wook Park, Hyun-jung Kim, Kab-keun Kim, Doo-hee Yoon