Patents by Inventor Sangwook Choi

Sangwook Choi 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).

  • Proton exchange composite membranes, composite solutions, and method for manufacturing and fuel cell using the same
    Patent number: 7029559
    Abstract: An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol crossover, high proton conductivity and is thus suitable for use in direct methanol fuel cells with low costal advantage.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: April 18, 2006
    Assignee: Korea Institute of Science Technology
    Inventors: Jongok Won, Yong Soo Kang, In-Hwan Oh, Heung Yong Ha, Sangwook Choi, Jee Won Choun, Bum-Suk Jung
  • Proton exchange composite membranes, composite solutions, and method for manufcturing and fuel cell using the same
    Publication number: 20030054219
    Abstract: An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol crossover, high proton conductivity and is thus suitable for use in direct methanol fuel cells with low costal advantage.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 20, 2003
    Inventors: Jongok Won, Yong Soo Kang, In-Hwan Oh, Heung Yong Ha, Sangwook Choi, Jee Won Choun, Bum-Suk Jung
  • Table leg for a display stand
    Patent number: D796881
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: September 12, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaeyoung Chang, Haneol Park, Junjae Lee, Sangwook Choi, Kyungho Kim, Sungyub Kim, Sumyun Kim
  • Table leg for a display stand
    Patent number: D802973
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: November 21, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaeyoung Chang, Haneol Park, Junjae Lee, Sangwook Choi, Kyungho Kim, Sungyub Kim, Sumyun Kim
  • Table top for a display stand
    Patent number: D804229
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: December 5, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaeyoung Chang, Haneol Park, Junjae Lee, Sangwook Choi, Kyungho Kim, Sungyub Kim, Sumyun Kim
  • Charger
    Patent number: D810678
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sangwook Choi, Kyungho Kim, Sungyub Kim, Haneol Park, Jeongin Lee, Jae-Young Chang
  • Cradle for electronic device
    Patent number: D811380
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: February 27, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sangwook Choi, Haneol Park
  • Table top for display stand
    Patent number: D812946
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaeyoung Chang, Haneol Park, Junjae Lee, Sangwook Choi, Kyungho Kim, Sungyub Kim, Sumyun Kim