Patents by Inventor Myung-Whan Chi

Myung-Whan Chi 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).

  • Gas identification device
    Patent number: 7170607
    Abstract: An optical gas identification system including a measuring cell (20), a modulated light source (10), a microphone (22), and a signal amplifier (30). The light source (10) comprises a plurality of laser diodes (12) and can selectively illuminate the modulated light with specific wavelengths. The gas identification system can determine the object signal by use of the signal processor (70) and the database (60) with the various signal patterns.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 30, 2007
    Assignee: Nanormics Incorporation Co., Ltd.
    Inventors: Chang-No Yoon, Hyoung-No Yoon, Myung-Whan Chi, Min-Su Han
  • Gas identification device
    Publication number: 20040179200
    Abstract: An optical gas identification system including a measuring cell (20), a modulated light source (10), a microphone (22), and a signal amplifier (30). The light source (10) comprises a plurality of laser diodes (12) and can selectively illuminate the modulated light with specific wavelengths. The gas identification system can determine the object signal by use of the signal processor (70) and the database (60) with the various signal patterns.
    Type: Application
    Filed: December 29, 2003
    Publication date: September 16, 2004
    Inventors: Chang-No Yoon, Hyoung-No Yoon, Myung-Whan Chi, Min-Su Han