Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4396787 | Process for the thermal dimerization of butadiene | Karl-Heinz Gluzek, Olaf Petersen, Wilhelm Neier, Gunter Strehlke | 1983-08-02 |
| 4244906 | Process for making phenol-aldehyde resins | Georg Michalczyk, Gerd Ripkens | 1981-01-13 |