Patents by Inventor Dukjoon Kim

Dukjoon Kim 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).

  • Publication number: 20240297322
    Abstract: The disclosure provides a method for manufacturing a cation exchange membrane for a fuel cell, comprising the steps of providing a first hydrocarbon-based polymer having a sulfonic acid group; forming a mixture by mixing the first hydrocarbon-based polymer with 3,4-ethylenedioxythiophene (EDOT); adding an oxidizing agent to the mixture to prepare a cation exchange membrane; and activating the sulfonic acid group of the cation exchange membrane.
    Type: Application
    Filed: February 28, 2024
    Publication date: September 5, 2024
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dukjoon KIM, Gyo Young GU
  • Patent number: 7955592
    Abstract: The present invention relates to a process for preparing a metal ion imprinted polymer which can selectively separate heavy metal ions, comprising: (a) reacting a metal salt and a monomer to make a monomer containing a metal ion group; (b) mixing the monomer containing the metal ion group, a cross-linker and an initiator in a solvent; (c) suspension polymerizing or emulsion polymerizing the obtained mixture to obtain a metal ion imprinted polymer containing a metal ion; and (d) removing the imprinted metal ion from said metal ion imprinted polymer.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: June 7, 2011
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Dukjoon Kim, Dam Hoang Anh
  • Publication number: 20070191551
    Abstract: The present invention relates to a process for preparing a metal ion imprinted polymer which can selectively separate heavy metal ions, comprising: (a) reacting a metal salt and a monomer to make a monomer containing a metal ion group; (b) mixing the monomer containing the metal ion group, a cross-linker and an initiator in a solvent; (c) suspension polymerizing or emulsion polymerizing the obtained mixture to obtain a metal ion imprinted polymer containing a metal ion; and (d) removing the imprinted metal ion from said metal ion imprinted polymer.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 16, 2007
    Applicant: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Dukjoon Kim, Dam Hoang Anh
  • Patent number: 6960617
    Abstract: Hydrogels having improved elasticity and mechanical strength properties are obtained by subjecting a hydrogel formulation containing a strengthening agent to chemical or physical crosslinking conditions subsequent to initial gel formation. Superporous hydrogels having improved elasticity and mechanical strength properties are similarly obtained whenever the hydrogel formulation is provided with a foaming agent. Interpenetrating networks of polymer chains comprised of primary polymer(s) and strengthening polymer(s) are thereby formed. The primary polymer affords capillary-based water sorption properties while the strengthening polymer imparts significantly enhanced mechanical strength and elasticity to the hydrogel or superporous hydrogel. Suitable strengthening agents can be natural or synthetic polymers, polyelectrolytes, or neutral, hydrophilic polymers.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: November 1, 2005
    Assignee: Purdue Research Foundation
    Inventors: Hossein Omidian, Yong Qiu, Shicheng Yang, Dukjoon Kim, Haesun Park, Kinam Park
  • Publication number: 20030232895
    Abstract: Hydrogels having improved elasticity and mechanical strength properties are obtained by subjecting a hydrogel formulation containing a strengthening agent to chemical or physical crosslinking conditions subsequent to initial gel formation. Superporous hydrogels having improved elasticity and mechanical strength properties are similarly obtained whenever the hydrogel formulation is provided with a foaming agent. Interpenetrating networks of polymer chains comprised of primary polymer(s) and strengthening polymer(s) are thereby formed. The primary polymer affords capillary-based water sorption properties while the strengthening polymer imparts significantly enhanced mechanical strength and elasticity to the hydrogel or superporous hydrogel. Suitable strengthening agents can be natural or synthetic polymers, polyelectrolytes, or neutral, hydrophilic polymers.
    Type: Application
    Filed: April 22, 2003
    Publication date: December 18, 2003
    Inventors: Hossein Omidian, Yong Qiu, Shicheng Yang, Dukjoon Kim, Haesun Park, Kinam Park