Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8206861 | Intermediate circuit with a first switch for switching a fuel cell stack and second switch for short-circuting the fuel stack, fuel cell system with an intermediate circuit, and method for controlling the intermediate circuit | Juergen Hoermann | 2012-06-26 |
| 7340437 | Circuit configuration and method for identifying error situations in interconnected systems | Klaus Beutelschiess | 2008-03-04 |
| 7304397 | Fuel cell system | Wolfgang Zinser | 2007-12-04 |
| 7247401 | Method and apparatus for operating a fuel cell system | Joachim Blum | 2007-07-24 |
| 6953100 | Method and apparatus to regulate the supply of power to an electric drive using a hybrid energy supply system in a vehicle | Joachim Blum, Mathias Boehmisch, Thomas Schetter | 2005-10-11 |
| 6777909 | Device for generating electric energy in a motor vehicle by means of a fuel cell and method for operating such a device | Josef Sonntag | 2004-08-17 |
| 6583519 | Apparatus for generating and distributing electrical power to loads in a vehicle | Mathias Boehmisch, Wolfgang Zinser | 2003-06-24 |
| 6555260 | Fuel cell system having a fuel cell stack with integrated polarity reversal protection diode | Anton Sonntag, Josef Sonntag | 2003-04-29 |