Patents by Inventor Henry P. Beerman

Henry P. Beerman 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).

  • Multi-focus spiral ultrasonic transducer
    Patent number: 4401910
    Abstract: An ultrasonic transducer providing a plurality of different focal lengths within a unitary structure and comprising a piezoelectric element having a cylindrical spiral surface with respective sections of the spiral surface providing respective different focal lengths. Each section of the spiral surface can include electrodes in the form of a Fresnel zone pattern to provide focusing in the orthogonal dimension to the spiral axis.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: August 30, 1983
    Assignee: Analogic Corporation
    Inventor: Henry P. Beerman