Patents by Inventor Michael J. Mendrin

Michael J. Mendrin 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).

  • Variable frequency interferometer
    Patent number: 3970389
    Abstract: Distance measurement by conventional optical interferometry requires physical movement of an optical element. The present system obtains interference with a continuous range of radiation wavelengths, providing a direct measurement of a constant optical path difference, in terms of the fringe count and the end wavelengths of the range employed. Variations in the optical path difference occurring during the measurement are compensated by simultaneous interferometry with a fixed wavelength.
    Type: Grant
    Filed: February 14, 1974
    Date of Patent: July 20, 1976
    Inventors: Michael J. Mendrin, Richard H. Taylor