Patents by Inventor Hyeong Woo JEONG

Hyeong Woo JEONG 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).

  • Method for producing high-concentration collagen for using as medical material
    Patent number: 11292827
    Abstract: Disclosed is a method of producing high-concentration collagen for use as a medical material, including: washing tissue of a mammal; subjecting the washed tissue to crushing and immersion in ethyl alcohol; subjecting the tissue to enzymatic treatment with stirring in purified water containing phosphoric acid and pepsin; adding sodium chloride to the collagen subjected to enzymatic treatment, performing stirring, and aggregating collagen; dissolving the aggregated collagen in purified water to give a collagen solution, which is then filtered using a filter and concentrated by removing the pepsin, low-molecular-weight material, and sodium chloride from the collagen solution using a tangential flow filtration device; subjecting the concentrated collagen to sterile filtration, aggregating the collagen using a pH solution in a neutralization tank, and concentrating the collagen by removing a non-aggregated solution; and concentrating the concentrated collagen using a centrifuge and stirring the concentrated collag
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 5, 2022
    Assignee: SEWONCELLONTECH CO., LTD.
    Inventors: Cheong Ho Chang, Hyeong Woo Jeong, Ji Chui Yoo, Se Ken Yeo, Dong Sam Suh
  • METHOD FOR PRODUCING HIGH-CONCENTRATION COLLAGEN FOR USING AS MEDICAL MATERIAL
    Publication number: 20170334969
    Abstract: Disclosed is a method of producing high-concentration collagen for use as a medical material, including: washing tissue of a mammal; subjecting the washed tissue to crushing and immersion in ethyl alcohol; subjecting the tissue to enzymatic treatment with stirring in purified water containing phosphoric acid and pepsin; adding sodium chloride to the collagen subjected to enzymatic treatment, performing stirring, and aggregating collagen; dissolving the aggregated collagen in purified water to give a collagen solution, which is then filtered using a filter and concentrated by removing the pepsin, low-molecular-weight material, and sodium chloride from the collagen solution using a tangential flow filtration device; subjecting the concentrated collagen to sterile filtration, aggregating the collagen using a pH solution in a neutralization tank, and concentrating the collagen by removing a non-aggregated solution; and concentrating the concentrated collagen using a centrifuge and stirring the concentrated collag
    Type: Application
    Filed: December 11, 2014
    Publication date: November 23, 2017
    Inventors: Cheong Ho CHANG, Hyeong Woo JEONG, Ji Chul YOO, Se Ken YEO, Dong Sam SUH