Patents by Inventor Sung Sik Kwak

Sung Sik Kwak 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).

  • High Temperature Polymer Electrolyte Membrane Fuel Cell and Method for Manufacturing Same
    Publication number: 20240186555
    Abstract: An embodiment fuel cell including a high temperature polymer electrolyte membrane includes an electrolyte membrane including a phosphoric acid-doped polymer of intrinsic microporosity, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the second surface opposite the first surface.
    Type: Application
    Filed: April 12, 2023
    Publication date: June 6, 2024
    Inventors: Da Hee Kwak, Won Jae Choi, Songi Oh, Hyoun Myung Park, Sung Hee Shin, Jee Youn Hwang, Ah Hyeon Park, Kyung Su Kim, Ji Yun Kim, Seong Min Cho, Chang Sik Song
  • DE-DIFFERENTIATION OF ASTROCYTES INTO NEURAL STEM CELL USING NANOG
    Publication number: 20090246870
    Abstract: Disclosed are a composition and a method for inducing the de-differentiation of astrocytes into neural stem cells using Nanog. The de-differentiated neural stem cells have the ability to differentiate into astrocytes, neurons, or oligodendrocytes.
    Type: Application
    Filed: April 12, 2006
    Publication date: October 1, 2009
    Inventors: Seungkwon You, Jai Hee Moon, Byung Sun Yoon, Ki Dong Kim, Gyuman Park, Seung Jun Yoo, Eun Kyung Jun, Bona Kim, Sung Sik Kwak, Isaac Maeng
  • DE-DIFFERENTIATION OF ASTROCYTES INTO NEURAL STEM CELL USING Shh
    Publication number: 20090227023
    Abstract: Disclosed are a composition and a method for inducing the de-differentiation of astrocytes into neural stem cells using Shh. The de-differentiated neural stem cells have the ability to differentiate into astrocytes, neurons, and oligodendrocytes.
    Type: Application
    Filed: April 12, 2006
    Publication date: September 10, 2009
    Inventors: Seungkwon You, Jai Hee Moon, Byung Sun Yoon, Ki Dong Kim, Gyuman Park, Seung Jun Yoo, Eun Kyung Jun, Bona Kim, Sung Sik Kwak, Isaac Maeng