Patents by Inventor Sander L.J. Gierkink

Sander L.J. Gierkink 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).

  • Coupled sawtooth oscillator
    Patent number: 6107894
    Abstract: Relaxation oscillator comprising a chain of coupled sawtooth generator stages. Each stage has a capacitor which is charged and discharged. The charging of a capacitor begins when the voltage (C.sub.C1) of a previous stage reaches a threshold voltage (V.sub.H). To avoid sampling of noise on the threshold voltage (V.sub.H) each new voltage ramp is started gradually.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: August 22, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Adrianus J.M. Van Tuijl, Sander L.J. Gierkink