Patents by Inventor Ta-Chung Liu

Ta-Chung Liu 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).

  • Cutting apparatus with a light-emitting unit for alignment of a workpiece
    Patent number: 6988439
    Abstract: A cutting apparatus includes a base, a blade-holding arm mounted rotatably on the base, a blade mounted rotatably on the blade-holding arm and rotatable about an axis, and a light-emitting unit mounted on the blade-holding arm and adapted to project an image line on the workpiece. The light-emitting unit is movable in a transverse direction relative to the blade between a first position, in which the image line is disposed at a first lateral side with respect to the blade, and a second position, in which the image line is disposed at a second lateral side with respect to the blade.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 24, 2006
    Assignee: P & F Brother Industrial Corporation
    Inventors: Ta-Chung Liu, Yueh-Hsun Chang
  • Computer mouse
    Patent number: D479842
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 23, 2003
    Inventors: Chi-Chang Liu, Ta-Chung Liu