Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9873091 | Membrane having a pore-free separating layer and use and method of manufacturing a membrane | Michael Frania, Eva Maus | 2018-01-23 |
| 8968689 | Method for recovering potassium sulphate from biodiesel production | Alfred Schiffer | 2015-03-03 |
| 5248427 | Removal of water from mixtures with alcohols and/or carboxylic acids and/or carboxylic esters | Luise Spiske, Harald Meissner, Werner Hefner, Hermann Steinhauser, Guido Ellinghorst | 1993-09-28 |