Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4570023 | Process for the preparation of trichlorobenzenes | Gerd-Michael Petruck, Adolf Wissner, Sigurd Hartung | 1986-02-11 |
| 4300004 | Process for the preparation of dichlorobenzenes | Adolf Wissner, Werner Hauser, Feliks Bitners | 1981-11-10 |
| 4260827 | Process for the purification of aqueous solutions of low molecular weight polyhydroxyl compounds | Kurt Klinkmann | 1981-04-07 |
| 4254062 | Separation process | Sigurd Hartung, Gerhard Reiss, Lothar Puppe | 1981-03-03 |