Patents by Inventor Vernon L. Larrowe

Vernon L. Larrowe 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).

  • Phase-shift stabilized frequency multiplier
    Patent number: 4663541
    Abstract: A sinusoidal signal frequency multiplier, including a means for stabilizing the static input-ouput phase relationship. The static phase stabilizer compares the phase relationship between the frequency-multiplied output and the input signals, producing a signal which appropriately controls a phase shifter. This phase shifter operates on the input signal, the result serving as input to the frequency multiplier.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: May 5, 1987
    Assignee: Environmental Research Institute of Michigan
    Inventor: Vernon L. Larrowe
  • Apparatus for extended precision phase measurement
    Patent number: 4636719
    Abstract: An apparatus for measuring the phase difference between two signals including a precision extender employing a frequency multiplier for each of the signals, apparatus for heterodyning each of the signals back to their original frequencies, and a phase detector for measuring the phase difference of the heterodyned signals.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: January 13, 1987
    Assignee: Environmental Research Institute of Michigan
    Inventors: David M. Zuk, Vernon L. Larrowe