Patents by Inventor Woo Sub Youm

Woo Sub Youm 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).

  • Non-contact scanning apparatus using frequency response scheme and scanning method thereof
    Patent number: 7194897
    Abstract: An apparatus capable of tracking a sample surface level in a z direction and oscillating a cantilever at resonant frequency by using a frequency separation scheme in non-contact mode and method thereof. The inventive apparatus includes a sensing unit for sensing a sample surface; a frequency transforming unit for transforming the sensed signal; a frequency combining unit for combining signals; and an actuating unit for actuating the sensing unit.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: March 27, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Q Lee, Ki Bong Song, Kang Ho Park, Jun Ho Kim, Eun Kyoung Kim, Kyi Hwan Park, Woo Sub Youm
  • Non-contact scanning apparatus using frequency response separation scheme and scanning method thereof
    Publication number: 20040094711
    Abstract: An apparatus capable of tracking a sample surface level in a z direction and oscillating a cantilever at resonant frequency by using a frequency separation scheme in non-contact mode and method thereof. The inventive apparatus includes a sensing unit for sensing a sample surface; a frequency transforming unit for transforming the sensed signal; a frequency combining unit for combining signals; and an actuating unit for actuating the sensing unit.
    Type: Application
    Filed: August 28, 2003
    Publication date: May 20, 2004
    Inventors: Sung Q. Lee, Ki Bong Song, Kang Ho Park, Jun Ho Kim, Eun Kyoung Kim, Kyi Hwan Park, Woo Sub Youm