Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5256196 | Precipitated silica paste | Marian Chjonowski, Karl Meier, Wolfgang Leonhardt, Heinz Esch | 1993-10-26 |
| 4807819 | Process and apparatus for granulating powdery materials | Alfons Kreher, Bernd Brandt, Albert Peters | 1989-02-28 |