Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11185819 | Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems | Stephan Siemund, Attilio Siani, Thomas Schmitz, Markus Kinne | 2021-11-30 |
| 11181023 | Four way conversion catalysts for gasoline engine emissions treatment systems | Stephan Siemund, Attilio Siani, Thomas Schmitz, Oliver Seel, Knut Wassermann | 2021-11-23 |