Patents by Inventor David Durin

David Durin 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: 6685073
    Abstract: A method and apparatus for separating a wafer into wafer portions comprising a larger wafer flex-frame (50) supported on a support base (40) and a smaller flex-frame (60) positioned within the support base (40). A wafer film transfer cylinder (30) encompasses a wafer breaking device (12), such as a convex dome. The transfer cylinder (30) is slidable downwardly with respect to the dome (12) to first stretch the wafer tape (51) and then transfer the wafer (56) from the larger frame (50) to the smaller frame (60) after dome (12) breaks the wafer (56) into die. The transfer cylinder (30) is heated to facilitate removing the saw tape (51) from the larger frame (50) after transfer to the smaller frame (60). The transfer cylinder (30) is juxtaposed with the smaller frame (60) residing within a cavity (48) of the support base (46). The present invention is suited for automated wafer transfer carriers which advance the broken wafer to pick and place equipment for packaging of the die.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: February 3, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Robert G. McKenna, David Durin, Don Brown, Cecil Davis, John Jones