Patents by Inventor Earl D. Hertzog

Earl D. Hertzog 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).

  • Registering articles to sites with recessed ultrasonic bonding tool head
    Patent number: 4667870
    Abstract: A head (158) precisely registers an article (10) to a site for operations such as bonding. The article (10) may be an electronic chip (10) containing a plurality of sides (12-15) having top edges for engaging the head (158) and bottom edges for registering to a topside (95) of a pedestal (20). A body (161) has an upper portion adapted for support and a lower portion terminating in a downwardly presented, working face (159). Face 159 includes a cavity (166) formed by walls (167-170) having inwardly and upwardly directed surfaces (171-174) for engaging corresponding top edges of the chip (10). The chip (10) is at least partially disposed within the cavity (166) making it difficult for an operator to see, especially when a fixed microscope is required for viewing. A bore (175) communicates with the cavity (166) and may be connected to a vacuum source for drawing a chip (10) into the cavity and for removably engaging the same to the engaging surfaces (171-174).
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: May 26, 1987
    Assignees: American Telephone and Telegraph Company, AT&T Technologies, Inc.
    Inventors: Michael K. Avedissian, Earl D. Hertzog