Patents by Inventor Song Jun DOH

Song Jun DOH 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).

  • Patent number: 11833257
    Abstract: Disclosed is a porous structure including water-soluble chitosan; and a carboxymethyl cellulose-based compound, wherein a weight ratio of the water-soluble chitosan and the carboxymethyl cellulose-based compound is from 65:35 to 25:75, and a process for preparing the same.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: December 5, 2023
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Tae Hee Kim, Jung Nam Im, Song Jun Doh, Chaehwa Kim, Yoonjin Kim, Gyu Dong Lee
  • Patent number: 11191865
    Abstract: Disclosed are a medical fiberous structure and a method for preparing the same, wherein the medical fiberous structure comprises calcium carboxymethyl cellulose and a chitosan compound, at least one of the calcium carboxymethyl cellulose and the chitosan compound having a fibrous shape.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: December 7, 2021
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Jung Nam Im, Song Jun Doh, Tae Hee Kim, Yoonjin Kim, Chaehwa Kim, Gyu Dong Lee, Gahee Kim
  • Publication number: 20200139001
    Abstract: Disclosed is a porous structure including water-soluble chitosan; and a carboxymethyl cellulose-based compound, wherein a weight ratio of the water-soluble chitosan and the carboxymethyl cellulose-based compound is from 65:35 to 25:75, and a process for preparing the same.
    Type: Application
    Filed: June 10, 2016
    Publication date: May 7, 2020
    Inventors: Tae Hee KIM, Jung Nam IM, Song Jun DOH, Chaehwa KIM, Yoonjin KIM, Gyu Dong LEE
  • Publication number: 20180169291
    Abstract: Disclosed are a medical fiberous structure and a method for preparing the same, wherein the medical fiberous structure comprises calcium carboxymethyl cellulose and a chitosan compound, at least one of the calcium carboxymethyl cellulose and the chitosan compound having a fibrous shape.
    Type: Application
    Filed: June 24, 2016
    Publication date: June 21, 2018
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Jung Nam IM, Song Jun DOH, Tae Hee KIM, Yoonjin KIM, Chaehwa KIM, Gyu Dong LEE, Gahee KIM
  • Patent number: 9642929
    Abstract: The present invention relates to a highly liquid absorbent and hardly water-soluble carboxymethyl cellulose (CMC) foam, which absorbs body fluid or water, expands in volume when absorbing liquid, does not gelate, and maintains shape. The hardly water-soluble CMC foam prepared according to the preparation method of the present invention has remarkably superior liquid absorption property, shows large volume expansibility when absorbing liquid, does not gelate, and maintains shape. Therefore, a remarkably improved ability is shown when used as a hemostatic agent and a wound dressing. In addition, when the CMC foam is treated with a CMC powder dispersing liquid, the surface characteristics change, thereby preventing adhesion with the skin and improving liquid retention capability. Thus, it is possible to control the liquid absorption property thereof to meet the desired purpose.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 9, 2017
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jung Nam Im, Song Jun Doh, Tae Hee Kim, Min Ji Yoon, Chae Hwa Kim
  • Patent number: 9481963
    Abstract: The present invention relates to a manufacturing method of a carboxymethyl cellulose nonwoven fabric which includes the carboxymethylation of cellulose fibers and the subsequent paper-making process to prepare a carboxymethyl cellulose nonwoven fabric. Comparing with the conventional method involving carboxymethylation of a nonwoven fabric, the method of the present invention has convenience and easiness of the process and thus enables production on a large scale. Further, the carboxymethyl cellulose nonwoven fabric manufactured by the present invention is susceptible to gelation upon contact with body fluids or water and thus useful as a medical nonwoven fabric or a mask pack.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 1, 2016
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jung Nam Im, Song Jun Doh, Dae Young Lim, Ji Yun Lee
  • Publication number: 20160067370
    Abstract: The present invention relates to a highly liquid absorbent and hardly water-soluble carboxymethyl cellulose (CMC) foam, which absorbs body fluid or water, expands in volume when absorbing liquid, does not gelate, and maintains shape. The hardly water-soluble CMC foam prepared according to the preparation method of the present invention has remarkably superior liquid absorption property, shows large volume expansibility when absorbing liquid, does not gelate, and maintains shape. Therefore, a remarkably improved ability is shown when used as a hemostatic agent and a wound dressing. In addition, when the CMC foam is treated with a CMC powder dispersing liquid, the surface characteristics change, thereby preventing adhesion with the skin and improving liquid retention capability. Thus, it is possible to control the liquid absorption property thereof to meet the desired purpose.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 10, 2016
    Inventors: Jung Nam IM, Song Jun DOH, Tae Hee KIM, Min Ji YOON, Chae Hwa KIM