Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322563 | Process for coloring building materials | Karl-Heinz van Bonn, Bernd Krockert | 1994-06-21 |
| 5290352 | Process for the preparation of a pigment suspension | Bernd Krockert | 1994-03-01 |