Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6838543 | Method for producing polycarbonates | Fritz Wilhelm | 2005-01-04 |
| 5576414 | Process for generating a vacuum in production of polycarbonate | Fritz Wilhelm, Walter W. Wenzel, Klaus Mackensen | 1996-11-19 |
| 5563209 | Process for the reduction of carboxyl-end groups of linear polyesters | Heinz-Dieter Schumann, Fritz Wilhelm | 1996-10-08 |