Patents by Inventor Benjaman R. Johnson

Benjaman R. Johnson 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).

  • Circuit and system for ultrasonic power regulation
    Publication number: 20090016091
    Abstract: A circuit for power regulation of ultrasonic generators comprising a half bridge or full bridge circuit and a regulator circuit that controls or regulates the output power of the bridge circuit by, among other things, subtracting bridge voltage from the +VDC power supply. A full range of bridge circuit output powers are efficiently produced by varying the duty cycle of the drive signal to the switching device in the regulator circuit.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 15, 2009
    Inventor: Benjaman R. Johnson