Patents by Inventor Duncan Andrew Grant

Duncan Andrew Grant 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).

  • Low power audio device
    Patent number: 6762645
    Abstract: An electrical device has an audio output, and the electrical device includes a radio receiver circuit, a class D amplifier, and an audio output element. The radio receiver circuit operates at a lower supply voltage than the amplifier. Moreover, the voltage supply for the radio receiver circuit is generated by a converter operating in a switched manner.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 13, 2004
    Assignee: The University of Bristol
    Inventor: Duncan Andrew Grant