Patents by Inventor Stephan C. Shepherd

Stephan C. Shepherd 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).

  • Patent number: 4215194
    Abstract: A method for chemically milling sheet metal to form three-dimensional objects comprising masking the sheet metal by selectively applying a resist material to opposite sides of the sheet metal to form a design, applying an etchant to the masked metal which erodes the metal according to the design, and simultaneously forming connecting tabs and score lines. The tabs and score lines allow certain design portions to be bent to different planes to form the three-dimensional object.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: July 29, 1980
    Assignee: Masterwork, Inc.
    Inventor: Stephan C. Shepherd