Patents by Inventor Timothy S. Killeen

Timothy S. Killeen 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).

  • Methods and apparatus for determining the relative positions of probe tips on a printed circuit board probe card
    Patent number: 6710798
    Abstract: A probe card inspection system uses a fiduciary plate having a plurality of targets deposited thereon by photolithography and vapor deposition. A plurality of semiconductor probe card probe tips are contacted with the fiducial pattern on the plate. An electronic imaging system determines the position of geometric centroids of the probe tips with respect to an index mark in the fiducial pattern. A central processor determines the position of each imaged probe tip(s) with respect to the index mark, and calculates the relative positions of each probe tip from that data.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: March 23, 2004
    Assignee: Applied Precision LLC
    Inventors: Ron Hershel, Rich Campbell, Timothy S. Killeen, Donald B. Snow