Patents by Inventor Sun Il Kwon

Sun Il Kwon 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).

  • System and method for compensating for anode gain non-uniformity in multi-anode position sensitive photomultiplier tube
    Patent number: 8193507
    Abstract: The present invention relates to a system and method for compensating for anode gain non-uniformity in a Multi-anode Position Sensitive Photomultiplier Tube (PS-PMT), in which a compensation unit is disposed between the multi-anode position sensitive photomultiplier tube and a position detection circuit unit and configured to uniform a current signal inputted to the position detection circuit unit, thereby compensating for anode gain non-uniformity. In accordance with the present invention, the compensation unit for changing resistance is used. Accordingly, there is an advantage in that the gain non-uniformity of each of the anodes of the PS-PMT can be compensated for. Furthermore, the gain non-uniformity of each of the anodes of the PS-PMT is compensated for by changing resistance values of the variable resistances of the compensation unit. Accordingly, there is an advantage in that the interaction positions of gamma rays can be calculated more precisely.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 5, 2012
    Assignee: SNU R&DB Foundation
    Inventors: Jae Sung Lee, Chan Mi Lee, Sun Il Kwon, Mikiko Ito, Hyun Suk Yoon, Sang Keun Park, Seong Jong Hong, Dong Soo Lee
  • SYSTEM AND METHOD FOR COMPENSATING FOR ANODE GAIN NON-UNIFORMITY IN MULTI-ANODE POSITION SENSITIVE PHOTOMULTIPLIER TUBE
    Publication number: 20110192980
    Abstract: The present invention relates to a system and method for compensating for anode gain non-uniformity in a Multi-anode Position Sensitive Photomultiplier Tube (PS-PMT), in which a compensation unit is disposed between the multi-anode position sensitive photomultiplier tube and a position detection circuit unit and configured to uniform a current signal inputted to the position detection circuit unit, thereby compensating for anode gain non-uniformity. In accordance with the present invention, the compensation unit for changing resistance is used. Accordingly, there is an advantage in that the gain non-uniformity of each of the anodes of the PS-PMT can be compensated for. Furthermore, the gain non-uniformity of each of the anodes of the PS-PMT is compensated for by changing resistance values of the variable resistances of the compensation unit. Accordingly, there is an advantage in that the interaction positions of gamma rays can be calculated more precisely.
    Type: Application
    Filed: June 2, 2010
    Publication date: August 11, 2011
    Applicant: SNU R&DB FOUNDATION
    Inventors: Jae Sung Lee, Chan Mi Lee, Sun Il Kwon, Mikiko Ito, Hyun Suk Yoon, Sang Keun Park, Seong Jong Hong, Dong Soo Lee
  • Jungle gym
    Patent number: D813969
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: March 27, 2018
    Assignee: Colorwoods Inc.
    Inventors: Sun Il Kwon, Jin Ra Park