Patents by Inventor Paul D. Bloch

Paul D. Bloch 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).

  • Slanted and chirped surface acoustic wave devices
    Patent number: 4633117
    Abstract: A surface acoustic wave device comprises a transducer 1 consisting of two electrodes 2 and 3 deposited on the surface of a substrate 4. Transducer 1 is a slanted chirped transducer with short fingers 5 and 6 to focus any acoustic wave generated in the transducer to a position along a line 8 spaced from transducer dependent on the frequency of the signal.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: December 30, 1986
    Assignee: National Research Development Corp.
    Inventors: Paul D. Bloch, Michael E. Barnard, Edward G. S. Paige