Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877885 | Novel 3-sulfinatomethyl-or 3-sulfonatomethyl-4-sulfomethyl pyrrolidinium betaines and their salts as well as process for making the same | Detlef Ballschuh, Horst Seibt, Roland Ohme, Egon Gruendemann, Elke Krause | 1989-10-31 |