Patents by Inventor Lewis F. Hart

Lewis F. Hart 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: 4141456
    Abstract: The device includes an alignment station at which an operator can align a wafer under a microscope. Once the wafer is properly aligned, a transfer chuck is brought into position above the wafer and aligned with alignment pins located in fixed positions at the alignment station. The wafer is then fixed to the transfer chuck and released from the alignment station. The transfer chuck is moved into proper alignment with alignment pins at a remote operation station, such as an automatic scribing station. The invention allows the operator to view the wafer with semiconductor devices facing the operator and provides for flipping the wafer over through the use of the transfer chuck so that the laser scriber can scribe the wafer on the side away from the semiconductor devices.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: February 27, 1979
    Assignee: RCA Corp.
    Inventor: Lewis F. Hart