Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859756 | Polymers of oxyalkylated unsaturated quaternary ammonium salts, their preparation and their use | Hans-Helmut Goertz, Alfred Oftring | 1989-08-22 |
| 4841066 | Preparation of 3-methyl-1-vinylimidazolium chlorides | Hans-Helmut Goertz, Ferdinand Straub, Axel Sanner, Albrecht Kolb, Hans-Juergen Raubenheimer | 1989-06-20 |