Patents by Inventor Valerie J. Risk

Valerie J. Risk 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).

  • Tunable filter with bypass
    Patent number: 6618579
    Abstract: An electrical circuit which includes a filter bypass mode. The circuit includes an amplifier including an inverting terminal, a noninverting terminal and an output terminal, at least one first capacitor coupled to the inverting terminal of the amplifier through at least one first switch, and, at least one second capacitor coupled to the noninverting terminal of the amplifier through at least one second switch. The electrical circuit provides filtering when the first and second switches are in a first state, and when the first and second switches are in a second state, the electrical circuit provides substantially no filtering.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: September 9, 2003
    Assignee: Chase Manhattan Bank
    Inventors: Malcolm H. Smith, Valerie J. Risk, Mark K. Lesher