Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6159369 | Process for the partial modification of porous, hydrophilitic filter membranes, of filter membranes treated in such manner and filter modules equipped with such filter membranes, especially filter cartridges | Gerhard Strohm, Hans-Joachim Muller, Markus KIRSCHNER | 2000-12-12 |
| 5868973 | Process and apparatus for producing fibrets from cellulose derivatives | Heinz-Joachim Muller, Rudiger Leibnitz | 1999-02-09 |
| 5620790 | Multi-layer microfiltration membrane having an integrated prefiltration layer and method of making same | Heinz-Joachim Muller, Tilo Renner | 1997-04-15 |