Patents by Inventor Doo Sun Choi

Doo Sun 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).

  • Method and apparatus for making a minute product using uv laser beam
    Publication number: 20040112878
    Abstract: Method for making a minute product by using laser beam. A workpiece is mounted on a mounting device. The laser beam is irradiated to a pre-selected portion of the workpiece for ablation. The space formed during the ablation is filled with filler. The other portion of the workpiece is ablated for making the workpiece to have a predetermined shape. The filler is removed from the shaped workpiece to provide the minute product.
    Type: Application
    Filed: January 30, 2004
    Publication date: June 17, 2004
    Inventors: Kyung-ku Yoon, Be-Sung Shin, Doo-Sun Choi, Seong-Kuk Lee, Jae-Ku Kim, Kyung-Hyun Whang