Patents by Inventor Sun-Bok Choi

Sun-Bok 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).

  • Superconducting power transforming apparatus
    Patent number: 8089332
    Abstract: The present invention relates to a superconducting power transforming apparatus. The superconducting power transforming apparatus according to the present invention comprises a transformer housing having a transforming cable passing hole and filled with a liquid cooling means; a superconducting transformer housed in the transformer housing in a state that the superconducting transformer is immersed in the liquid cooling means; a tap changer housing having a tap changing cable passing hole and vacuum-sealed from outside; a power tap changer housed in the vacuum tap changer housing; and a cable linking pipe vacuum-sealed from the transformer housing and the tap changer housing, and linking the transforming cable passing hole with the tap changing passing hole in order that a transformer winding tap cable connecting the superconducting transformer and the power tap changer passes through.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: January 3, 2012
    Assignee: Korea Polytechnic University Industry Academic Cooperation Foundation
    Inventors: Kyeong-Dal Choi, Ji-Kwang Lee, Woo-Seok Kim, Chan Park, Sun-Bok Choi
  • SUPERCONDUCTING POWER TRANSFORMING APPARATUS
    Publication number: 20110218110
    Abstract: The present invention relates to a superconducting power transforming apparatus. The superconducting power transforming apparatus according to the present invention comprises a transformer housing having a transforming cable passing hole and filled with a liquid cooling means; a superconducting transformer housed in the transformer housing in a state that the superconducting transformer is immersed in the liquid cooling means; a tap changer housing having a tap changing cable passing hole and vacuum-sealed from outside; a power tap changer housed in the vacuum tap changer housing; and a cable linking pipe vacuum-sealed from the transformer housing and the tap changer housing, and linking the transforming cable passing hole with the tap changing passing hole in order that a transformer winding tap cable connecting the superconducting transformer and the power tap changer passes through.
    Type: Application
    Filed: November 19, 2009
    Publication date: September 8, 2011
    Applicant: KOREA POLYTECHNIC UNIVERSITY
    Inventors: Kyeong-Dal Choi, Ji-Kwang Lee, Woo-Seok Kim, Chan Park, Sun-Bok Choi