Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31381 | Process for the preparation of propylene oxide | Gunter Prescher, Gerd Schreyer, Rolf Wirthwein, Helmut Waldmann, Hermann Seifert +2 more | 1983-09-13 |
| 4341709 | Preparation of .epsilon.-caprolactone | Willi Hofen, Herbert Klenk, Gerd Schreyer, Helmut Waldmann, Hermann Seifert +2 more | 1982-07-27 |
| RE30945 | Process for the preparation of propylene oxide | Guter Prescher, Gerd Schreyer, Rolf Wirthwein, Helmut Waldmann, Hermann Seifert +2 more | 1982-05-25 |