Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360682 | Stabilizing caprolactones with dihydroxybenzenes | Rolf Wirthwein, Helmut Waldmann, Hermann Seifert | 1982-11-23 |
| 4341709 | Preparation of .epsilon.-caprolactone | Willi Hofen, Gerd Schreyer, Otto Weiberg, Helmut Waldmann, Hermann Seifert +2 more | 1982-07-27 |
| 4339591 | Process for the production of caboxylic acid cyanides | Axel Kleemann, Bernd Lehmann | 1982-07-13 |
| 4326056 | Process for the production of 4-amino-6-tert. butyl-3-mercapto-1,2,4-triazin-5-one | Axel Kleemann, Bernd Lehamnn | 1982-04-20 |
| 4313879 | Process for the manufacture of very pure .epsilon.-caprolactone | Rolf Wirthwein, Gerd Siekmann, Wulf Schwerdtel | 1982-02-02 |