Patents by Inventor TN Chen

TN 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).

  • Three way laser indicator
    Patent number: 7124513
    Abstract: A laser indicator has a laser mechanism having three laser generators generating laser beams perpendicular to each other. Each of the three laser generators is electrically coupled to a separate laser control motor for independent control of the beam of the corresponding laser generator. The laser indicator further includes an adjusting mechanism including a control circuit module, a frame having an adjustment support associated therewith, and a plurality of level control motors disposed in the frame. The laser indicator also includes a laser generator adjuster and tightener.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: October 24, 2006
    Assignee: Querton Inc.
    Inventors: TN Chen, Sheng-Ching Wu, Ching-Horng Hsiao