Patents by Inventor Ingeborg Zierhut

Ingeborg Zierhut 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).

  • Solid-state switching element with two source electrodes and solid-state switch with such an element
    Patent number: 5880506
    Abstract: A solid-state switching element that works with at least one semiconductor region or a pair of antiserially arranged semiconductor regions having characteristic curves similar to those of FETs. An internal body diode in inverse operation is also provided. In addition to having a drain and a gate, each of the semiconductor regions has two source electrodes, with several cells combined with the electrodes in cell design. One source serves as a load current electrode, called a load source, and the other source is available as a gate electrode, called a control source. The effective semiconductor region of the load source is larger than the effective semiconductor region of the control source.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: March 9, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reinhard Maier, Hermann Zierhut, deceased, Heinz Mitlehner, Ingeborg Zierhut