Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840111 | Nanodisperse titanium dioxide, process for the production thereof and use thereof | Gerhard Wiederhoft, Kai Butje, Michael Bödiger, Heinrich Alberts | 1998-11-24 |
| 5723404 | Process for the production of mixed oxide powders for catalysts for the removal of nitrogen oxides | Kai Butje, Jurgen Kischkewitz, Rolf Braun, Udo Holtmann | 1998-03-03 |