Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4668273 | Quaternary ammonium salts of diepoxides and diamines, their preparation and use | — | 1987-05-26 |
| 4478724 | Cationic adsorption agent | Roger Palmberg | 1984-10-23 |
| 4424284 | Cationic adsorption agent | Roger Palmberg | 1984-01-03 |
| 4306080 | Process for the purification of industrial effluents | Peter Liechti, Hans Wegmuller, Rudolf F. Wurster, Quentin Bowes | 1981-12-15 |
| 4247476 | Polymeric quaternary ammonium salts containing specific cationic recurring units | Ulrich Horn, Hans-Ulrich Berendt | 1981-01-27 |
| 4243390 | Process for dyeing or printing fibrous material using quaternary polymerized ammonium salts as assistants | Paul Schafer, Hans-Ulrich Berendt | 1981-01-06 |
| 4207184 | Process for the purification of industrial effluents | Leo E. Kaiser, Hans Scheidegger | 1980-06-10 |