Patents by Inventor Sung Sik Pak

Sung Sik Pak 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).

  • Laminated object manufacturing apparatus and method
    Patent number: 5876550
    Abstract: The present invention generally relates to manufacturing apparatus, method of manufacture, and products manufactured thereby and more particularly to an integral three-dimensional object (6, 15) formed from individually contoured laminations (4, 62) of the same or gradually varying shape, successive laminae of that object being produced out of thin sheet or powder based materials (1, 60) through the cutting, fusing or physicochemical property changing action generated by a computer directed beam (7) of concentrated energy or matter, successive substantially planar laminations (4, 62) of that object (6, 15) being automatically stacked together for step-wise laminar buildup of the desired object (6, 15).
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: March 2, 1999
    Assignee: Helisys, Inc.
    Inventors: Michael Feygin, Sung Sik Pak