Patents by Inventor Wolfgang Mayr

Wolfgang Mayr 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: 5420520
    Abstract: A method of testing semi-conductor chips is disclosed. The individual semiconductor chips have I/O, power, and ground contacts. In the method of the invention a chip test fixture system is provided. The chip test fixture system has contacts corresponding to the contacts on the semiconductor chip. The carrier contacts have dendritic surfaces. The chip contacts are brought into electrically conductive contact with the conductor pads on the chip test fixture system. Test signal input vectors are applied to the inputs of the semiconductor chip, and output signal vectors are recovered from the semiconductor chip. After testing the chip is removed from the substrate.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: May 30, 1995
    Assignee: International Business Machines Corporation
    Inventors: Morris Anschel, Anthony P. Ingraham, Charles R. Lamb, Michael D. Lowell, Voya R. Markovich, Wolfgang Mayr, Richard G. Murphy, Mark V. Pierson, Tamar A. Powers, Timothy S. Reny, Scott D. Reynolds, Bahgat G. Sammakia, Wayne R. Storr
  • Patent number: 4975079
    Abstract: An electrical connector is described for making contact with a plurality of convex and deformable contacts on an electronic device. The electrical connector comprises a substrate having a plurality of conductors which extend above its surface. A polymeric material is disposed on the surface of the substrate and has openings which expose the conductors, each opening sized to receive one of the convex, deformable contacts, and to enable electrical connection between the exposed conductors and the deformable contacts. A mechanism is provided for urging the deformable contacts on the electronic device against the exposed conductors. The mechanism exerts sufficient force between the device and the conductors to cause some deformation of the convex contact areas by the conductors.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: December 4, 1990
    Assignee: International Business Machines Corp.
    Inventors: Brian S. Beaman, Keith E. Fogel, Jungihl Kim, Wolfgang Mayr, Jane M. Shaw, George F. Walker