Patents by Inventor Nathan L. Dunfee

Nathan L. Dunfee 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).

  • High speed chip substrate test fixture
    Patent number: 10705134
    Abstract: An apparatus, multi-layer semiconductor substrate and system for testing a high-speed signal through a printed circuit board is provided. Embodiment of the present invention provides an apparatus comprises a multi-layer substrate, one or more transmission lines disposed within the multi-layer substrate, one or more connectors attached to the multi-layer substrate for connecting one or more test cards, a lid, comprising one or more cutouts for the one or more connectors, a clamp for compressing the multi-layer substrate against the lid, and one or more high-speed connectors attached to the one or more test cards, respectively.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 7, 2020
    Assignee: International Business Machines Corporation
    Inventors: Lloyd A. Walls, Nam H. Pham, Jason R. Eagle, Nathan L. Dunfee, Pavel Roy Paladhi
  • HIGH SPEED CHIP SUBSTRATE TEST FIXTURE
    Publication number: 20190170809
    Abstract: An apparatus, multi-layer semiconductor substrate and system for testing a high-speed signal through a printed circuit board is provided. Embodiment of the present invention provides an apparatus comprises a multi-layer substrate, one or more transmission lines disposed within the multi-layer substrate, one or more connectors attached to the multi-layer substrate for connecting one or more test cards, a lid, comprising one or more cutouts for the one or more connectors, a clamp for compressing the multi-layer substrate against the lid, and one or more high-speed connectors attached to the one or more test cards, respectively.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 6, 2019
    Inventors: Lloyd A. Walls, Nam H. Pham, Jason R. Eagle, Nathan L. Dunfee, Pavel Roy Paladhi