Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9048467 | Fuel cell system with energy-efficient reactant recycling | Ulrich Gottwick, Jens Intorp, Daniel Zirkel, David Schlipf | 2015-06-02 |
| 8563187 | Method and device for improving the service life of a fuel cell at transitions in operation | Frank Baumann, Florian Wahl, Arthur Schaefert, Sebastian Maass, Jens Intorp +2 more | 2013-10-22 |
| 7670697 | Fuel cell system with fuel cell unit having means for storing or dispensing electrical energy | Juergen Binder, Eberhard Schoch, Ulrich Gottwick, Rainer Saliger, Frank Baumann +3 more | 2010-03-02 |
| 6599461 | Method for producing nonslip floor coverings | Thomas Sievers | 2003-07-29 |
| 6486435 | Device and method for structuring the surface of floor coverings which have already been laid | Eckhard Beyer, Jan Hauptmann | 2002-11-26 |
| 6434897 | Non-slip floor covering and process for producing it | Thomas Sievers, Udo Stürmer | 2002-08-20 |
| 6167879 | Process for producing non-slip floor covering | Thomas Sievers, Udo Stürmer | 2001-01-02 |
| 5380569 | Fire resistant glass partition | Detlef Kujas | 1995-01-10 |
| 4438053 | Making a fibrillated synthetic-resin strand | Karl-Heinz Banke, Elisabeth Hering, Wilfried Lobel, Dieter Pollack, Ute Grell +1 more | 1984-03-20 |