Patents by Inventor Yin-Szn Chen

Yin-Szn Chen 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).

  • Rotary engraving tool
    Publication number: 20030059263
    Abstract: A rotary engraving tool includes a cylindrical body having a tapered end, and a pair of opposed main flutes defined in the cylindrical body by respective chamfer faces. The chamfer faces extend to the tapered end and form two cutting edges at where they meet with the tapered end. The rotary engraving tool with two cutting edges is excellent in making fine relief and efficient in its cutting.
    Type: Application
    Filed: May 13, 2002
    Publication date: March 27, 2003
    Applicant: Zen Wu Zheng Sun Tool Co. Ltd.
    Inventor: Yin-Szn Chen