Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10458299 | Exhaust gas aftertreatment apparatus | Friedhelm Hillen, Arne Bienholz, Marco Dris Paul | 2019-10-29 |
| 10184373 | Internal combustion engine for reducing exhaust gas emissions | Friedhelm Hillen, Manfred Sieberer | 2019-01-22 |