Patents by Inventor Hyeong Soo Choi

Hyeong Soo 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).

  • Radio frequency repeater for cancelling feedback interference signal with built in antenna
    Patent number: 7831203
    Abstract: The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: November 9, 2010
    Assignee: RF Window Co. Ltd
    Inventors: Seong Jae Lee, Mi Ja Lee, Chang Soon Kim, Hyeong Soo Choi
  • Radio Frequency Repeater for Cancelling Feedback Interference Signal with Built In Antenna
    Publication number: 20080125033
    Abstract: The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.
    Type: Application
    Filed: November 26, 2007
    Publication date: May 29, 2008
    Applicant: RF WINDOW CO., LTD.
    Inventors: Seong Jae Lee, Mi Ja Lee, Chang Soon Kim, Hyeong Soo Choi