Patents by Inventor F. Graham Sommer

F. Graham Sommer 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: 4763661
    Abstract: Diseased tissue such as cirrhotic liver is differentiated from normal tissue by applying an ultrasound wave to the tissue, receiving backscattered ultrasound waves therefrom and bandpass filtering electrical signals generated from the backscattered wave. Assuming that the ultrasound wave has a spectrum and a center frequency, the bandpass is narrow relative to the spectrum and centered within the bounds of the spectrum of the ultrasound wave. The filtered signal will have an amplitude distribution for diseased tissue which is different from the amplitude distribution of normal tissue.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: August 16, 1988
    Assignee: Stanford University
    Inventors: F. Graham Sommer, Roger A. Stern