Patents by Inventor Hermann Zierhut, deceased

Hermann Zierhut, deceased 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).

  • Patent number: 6046516
    Abstract: An electronic switch with a switching element of the type of a semiconductor switch with the mode of operation of at least one FET, so that due to the technology it also has an internal body diode in inverse operation. A control circuit for executing the operating commands is set up so that gate in inverse operation receives such a voltage that the body diode is still currentless. In addition, a functional unit of the control circuit is set up to cause the switching element to assume the ON conducting state as a function of a commutation voltage or a commutation current, i.e., in inverse operation.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: April 4, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reinhard Maier, Hermann Zierhut, deceased, Heinz Mitlehner
  • Patent number: 5943366
    Abstract: Method and device for generating bit information in a subscriber station of a bus system, in particular of the bus of the EIBA, essentially symmetrical AC voltage information being superposed as bit information on a DC voltage of the bus in that a DC voltage potential (19) of a line under inductive loading (9) is pulled, in each case in an active pulse (20) to the potential of another line and an equalizing pulse (22, 23) is formed with subsequent energy recovery. It is provided that the active pulse (20) of the bit information at a bit frequency is formed from individual pulses (17) of higher frequency.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 24, 1999
    Assignee: Siemens AG
    Inventor: Hermann Zierhut, deceased
  • 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