Patents by Inventor John H. Zemek

John H. Zemek 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).

  • Stage assembly and method for optical microscope including Z-axis stage and piezoelectric actuator for rectilinear translation of Z stage
    Patent number: 7180662
    Abstract: A stage assembly mountable on an optical microscope for orienting a sample into a desired focal position includes an X-axis plate operable for rectilinear shifting in the X-axis direction and a Y-axis plate mounted on the X-axis plate operable for rectilinear translation in the Y-axis direction. A Z-axis plate is mounted on the XY plate assembly for carrying a sample to be investigated and a piezoelectric actuator mechanism is interposed between the XY plate assembly and the Z-axis plate operable for rectilinear translation of the Z-axis plate.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: February 20, 2007
    Assignee: Applied Scientific Instrumentation Inc.
    Inventors: Gary D. Rondeau, John H. Zemek