Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5164424 | Polymer having a betaine structure, solution diffusion membrane, process for producing same and use thereof | Hartmut E. A. Brueschke, Guido Ellinghorst, Axel Niemoeller | 1992-11-17 |