Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4235844 | Process and apparatus for the manufacture of linear high molecular weight polyesters | Hans-Josef Sterzel, Hans Pirzer | 1980-11-25 |
| 4214072 | Process for the manufacture of linear high molecular weight polyesters | Hans-Josef Sterzel, Hans Pirzer | 1980-07-22 |