Patents Assigned to Nei-Chang Yu
  • Orthodontic System
    Publication number: 20110207070
    Abstract: An orthodontic system includes a tap, a screw and a tool. A user can maneuver the tool to drive the tap and screw. The tap is used to make a hole in an alveolus bone. The screw is used for firm insertion in the alveolus bone through the hole made with the tap.
    Type: Application
    Filed: May 14, 2009
    Publication date: August 25, 2011
    Applicant: Nei-Chang Yu
    Inventors: Nei-Chang Yu, Nai-Wen Yu