Patents by Inventor Charles E. Tompkins

Charles E. Tompkins 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).

  • Tamper-proof identification of solid objects
    Patent number: 6432559
    Abstract: Identification markers and identification methods for solid objects, including metallic objects, are disclosed, the marker integrated with the object so that it is neither optically visible nor removable without destruction or impairment of the object. The marker is more radio opaque than the base material forming the object in the region of marker location and includes an identifying indicia thereon.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: August 13, 2002
    Assignee: Applied Technologies & Fabrication, Inc.
    Inventors: Dana D. Tompkins, Charles E. Tompkins