Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341709 | Preparation of .epsilon.-caprolactone | Willi Hofen, Herbert Klenk, Otto Weiberg, Helmut Waldmann, Hermann Seifert +2 more | 1982-07-27 |
| RE30945 | Process for the preparation of propylene oxide | Guter Prescher, Otto Weiberg, Rolf Wirthwein, Helmut Waldmann, Hermann Seifert +2 more | 1982-05-25 |
| 4314064 | Process for the production of nicotinamide | Helmut Beschke, Heinz Friedrich, Klaus Muller | 1982-02-02 |