Patents by Inventor William Chai

William Chai 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).

  • Automatic Positioning/Engraving Method For A Laser Engraving Machine
    Publication number: 20100108650
    Abstract: An automatic positioning/engraving method for a laser engraving machine is provided. A pen carriage of the laser engraving machine is moved above a provided workpiece. Before engraving, at least two positioning points on the peripheries of the workpiece are first positioned. A processor is used to calculate and determine a center for the positioning points. Finally, a driving unit is utilized to move the pen carriage to the center point and begin pattern engraving or cutting operation.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Inventors: Hans HUANG, Yao-Fang Lee, William Chai