Patents by Inventor Larry P. Robison

Larry P. Robison 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).

  • Method of processing a circuit board
    Patent number: 7676920
    Abstract: A test coupon on a printed circuit board used for verifying that vias in the printed circuit board are back drilled to a proper predetermined depth. Use of the coupon involves correlating a via on the board to a via of a test coupon drilling the board via and the test coupon via to substantially the same depth, where the depth is predetermined based on the board via. Then measuring the impedance of the test coupon to reveal the actual depth of the back drilling of the coupon via. Knowing the actual back drill depth of the coupon via is used to verify the back drill depth of the board via.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: March 16, 2010
    Assignee: Dell Products L.P.
    Inventors: Sandor T. Farkas, Hector F. Martinez, Bhavesh Patel, Indrani Paul, Larry P. Robison, Jr., Darrell J. Slupek, Aubrey Sparkman
  • Combination Impedance/Back Drill Coupon
    Publication number: 20080087461
    Abstract: A test coupon on a printed circuit board used for verifying that vias in the printed circuit board are back drilled to a proper predetermined depth. Use of the coupon involves correlating a via on the board to a via of a test coupon drilling the board via and the test coupon via to substantially the same depth, where the depth is predetermined based on the board via. Then measuring the impedance of the test coupon to reveal the actual depth of the back drilling of the coupon via. Knowing the actual back drill depth of the coupon via is used to verify the back drill depth of the board via.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 17, 2008
    Applicant: DELL PRODUCTS L.P.
    Inventors: Sandor T. Farkas, Hector F. Martinez, Bhavesh Patel, Indrani Paul, Larry P. Robison, Darrell J. Slupek, Aubrey Sparkman