Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7666376 | Diesel particulate filter comprising a finely dispersed diesel particulate catalyst | Helmut Hackfort, Edgar V. Hünnekes | 2010-02-23 |
| 6613293 | Electrically heated catalytic converter | Helmut Hackfort | 2003-09-02 |