Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883647 | Use of manganese nodules or deep-sea ores containing manganese for the reduction of nitrogen oxides in exhaust gases | Hartmut Kainer, Wilfried Schnelle, Peter Halbach | 1989-11-28 |
| 4828806 | Process for cleaning an exhaust gas | Claus Flockenhaus, Karl H. Laue, Theo Sander, Erich Hackler, Blagoje Levkov +2 more | 1989-05-09 |
| 4806427 | Process for the production of catalysts for the reduction of nitrogen oxides from exhaust gases and similar chemical air cleaning processes | Hermann Stein, Hartmut Kainer | 1989-02-21 |