Patents by Inventor Hau Yung Lang

Hau Yung Lang 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).

  • Engraving dial for inside ring engraving machine
    Patent number: 6802128
    Abstract: An engraving dial formed of an upper dial plate, a lower dial plate, a bottom holder plate and a top holder plate for use in an inside ring engraving machine form is disclosed in which the upper dial plate and the lower dial plate are detachably and reversibly secured between the top and bottom holder plates, each dial plate having the top and bottom sides respectively engraved with a set of signs of a different form for selection.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: October 12, 2004
    Inventors: His-Shan Yang, Bonnie Hau Yung Lang
  • Side-opening case
    Patent number: D521730
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 30, 2006
    Assignee: Tung Hsin Trading Corp.
    Inventor: Hau Yung Lang
  • Bench top organizer
    Patent number: D608114
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: January 19, 2010
    Assignee: Tung Hsin Trading Corp.
    Inventor: Hau Yung Lang