Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886602 | Process for the separation of biotechnologically produced valuable materials from a fermenter broth by crossflow micro- and/or ultrafiltration | Norbert Kuehne, Franz-Josef Carduck | 1989-12-12 |