Patents by Inventor Mark Fiester

Mark Fiester 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).

  • High voltage pump circuit with reduced oxide stress
    Patent number: 6072358
    Abstract: Improved charge pump circuitry that significantly reduces voltage stress on transistor gate oxides is disclosed. The charge pump circuit according to a preferred embodiment of the present invention includes circuitry that biases the otherwise vulnerable transistors in the charge pump circuit such that the voltage across their gate oxide is reduced. The charge pump of the present invention further provides circuitry to reduce leakage current.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: June 6, 2000
    Assignee: Altera Corporation
    Inventors: Chuan-Yung Hung, John Costello, Stephanie Tran, Guu Lin, Mark Fiester