Patents by Inventor Stephen C. Yao

Stephen C. Yao 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).

  • Orthodontic wire
    Patent number: 5468147
    Abstract: An orthodontic wire for applying torque forces to a patient's teeth. The inventive device includes a wire having a substantially rectangular cross section with longitudinal grooves extending along exterior surfaces of the wire. The wire is more flexible than standard square or rectangular wires, yet still retains the ability to apply a torquing force absent in round wire.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: November 21, 1995
    Inventor: Stephen C. Yao