Patents by Inventor Erich Ramschak

Erich Ramschak 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).

  • Method and device for operating fuel cells
    Patent number: 9843060
    Abstract: A system and method for operating a fuel-cell system, which is attached to at least one further component via a cooling and/or lubricating circuit. A water-based, oil-free coolant and lubricant is used, and a flushing procedure for the fuel cell is initiated when a contamination of the fuel cell by the water-based, oil-free coolant and lubricant is detected.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: December 12, 2017
    Assignee: MAGNA STEYR Engineering AG & Co KG
    Inventors: Franz Mayr, Erich Ramschak
  • METHOD AND DEVICE FOR OPERATING FUEL CELLS
    Publication number: 20140287331
    Abstract: A system and method for operating a fuel-cell system, which is attached to at least one further component via a cooling and/or lubricating circuit. A water-based, oil-free coolant and lubricant is used, and a flushing procedure for the fuel cell is initiated when a contamination of the fuel cell by the water-based, oil-free coolant and lubricant is detected.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 25, 2014
    Applicant: MAGNA STEYR Engineering AG & Co KG
    Inventors: Franz MAYR, Erich RAMSCHAK
  • Method and device for monitoring the operating state of a battery
    Publication number: 20110062918
    Abstract: In a method for monitoring the operating state of a battery, preferably a Ni metal hydride or a Li-ion battery, formed of consisting of one or several interconnected battery cells, during the charging and discharging of the battery a low-frequency alternating current signal or voltage signal is applied to the battery. The resulting voltage or current signal is measured and the operating state of the battery or its battery cells is determined from at least one change in the harmonic distortion content of the measured voltage or current signal.
    Type: Application
    Filed: March 26, 2009
    Publication date: March 17, 2011
    Inventors: Peter Prenninger, Erich Ramschak, Robert Fischer
  • Method for monitoring the operational state of a fuel cell stack
    Patent number: 7531253
    Abstract: The invention relates to a method for monitoring the operational state of a fuel cell stack comprising a plurality of series-connected single cells. In order to significantly reduce measuring costs and apparatus a low-frequency current or voltage signal is impressed on the fuel cell stack and the resulting current or voltage signal is measured. From at least one change of the harmonic content of the signal the operational state of individual cells of the fuel cell stack is inferred.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: May 12, 2009
    Assignee: AVL List GmbH
    Inventor: Erich Ramschak
  • Method for monitoring the operational state of a fuel cell stack
    Publication number: 20060078788
    Abstract: The invention relates to a method for monitoring the operational state of a fuel cell stack comprising a plurality of series-connected single cells. In order to significantly reduce measuring costs and apparatus a low-frequency current or voltage signal is impressed on the fuel cell stack and the resulting current or voltage signal is measured. From at least one change of the harmonic content of the signal the operational state of individual cells of the fuel cell stack is inferred.
    Type: Application
    Filed: October 4, 2005
    Publication date: April 13, 2006
    Inventor: Erich Ramschak