Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863895 | Honeycomb body as catalyst support for cleaning the exhaust of internal combustion engines | — | 1989-09-05 |
| 4859338 | Filter for small particles | — | 1989-08-22 |
| 4798631 | Metallic semi-finished product, processes for its preparation and its use | Hans-Joachim Fleischer, Klaus Lohscheidt, Dieter Gorres | 1989-01-17 |