Patents by Inventor Kenneth Charles Winkleblack

Kenneth Charles Winkleblack 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).

  • Apparatus for measuring sheet resistivity of semiconductor materials and diffused layers
    Patent number: 3970923
    Abstract: A device for measuring sheet resistivity of semiconductor materials and diffused layers uses a linear four-point probe having pneumatically-actuated contact pins coupled to a self-zeroing voltage amplifier and a current source having extremely high output resistance.
    Type: Grant
    Filed: October 9, 1974
    Date of Patent: July 20, 1976
    Assignee: Hewlett-Packard Company
    Inventors: George Reed Clark, Kenneth Charles Winkleblack