Patents by Inventor Christopher E. Durham

Christopher E. Durham 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: H1373
    Abstract: Apparatus and method are disclosed for providing the transfer of a semiconductor wafer from a first to a second location. The apparatus includes a transfer arm including a plurality of apertures to facilitate the attachment of a bowed wafer, without breakage or frontside contact, to the transfer arm. The size, number and location of the apertures may be determined in accordance with the size of the wafer, the amount of bow, as well as the type of bow (i.e., simple or complex). A plurality of flexible members may be disposed in a one-to-one relationship with the apertures and utilized to achieve a secure vacuum seal of the wafer to the transfer arm.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: November 1, 1994
    Assignee: American Telephone and Telegraph Company
    Inventors: Christopher E. Durham, William J. Malriat, Allen R. Melcher, Randy J. Penn