Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5620790 | Multi-layer microfiltration membrane having an integrated prefiltration layer and method of making same | Udo Holzki, Heinz-Joachim Muller | 1997-04-15 |
| 5376274 | Hydrophilic membrane and method for its production | Heinz-Joachim Muller, Anneliese Kuchar | 1994-12-27 |