Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4564514 | Process for the production of water-free organic hydrogen peroxide solution | Karlheinz Drauz, Axel Kleemann | 1986-01-14 |
| RE31381 | Process for the preparation of propylene oxide | Gunter Prescher, Gerd Schreyer, Otto Weiberg, Helmut Waldmann, Hermann Seifert +2 more | 1983-09-13 |
| 4369096 | Process for the purification of epoxides | Hermann Seifert, Helmut Waldmann, Willi Hofen | 1983-01-18 |
| 4360682 | Stabilizing caprolactones with dihydroxybenzenes | Herbert Klenk, Helmut Waldmann, Hermann Seifert | 1982-11-23 |
| RE30945 | Process for the preparation of propylene oxide | Guter Prescher, Gerd Schreyer, Otto Weiberg, Helmut Waldmann, Hermann Seifert +2 more | 1982-05-25 |
| 4313879 | Process for the manufacture of very pure .epsilon.-caprolactone | Herbert Klenk, Gerd Siekmann, Wulf Schwerdtel | 1982-02-02 |
| 4287135 | Stabilized diperoxyalkanedioic acids and aromatic peroxycarboxylic acids | Reinhard Stober, Christian Hase | 1981-09-01 |
| 4278615 | Process for the production of aromatic peroxycarboxylic acids | Reinhard Stober | 1981-07-14 |