Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5201998 | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Rosemarie Topfl, Michael Bernheim, Hubert Meindl, Peter Rohringer, Dieter Werthemann | 1993-04-13 |
| 4627889 | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Michael Bernheim, Hubert Meindl, Peter Rohringer, Dieter Werthemann | 1986-12-09 |
| 4623428 | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Michael Bernheim, Hubert Meindl, Peter Rohringer, Dieter Werthemann | 1986-11-18 |
| 4407976 | Anionic adsorbent | Jurg Merz, Rudolf F. Wurster | 1983-10-04 |
| 4395546 | N-Methylolcarboxamide compounds | Jeroslav Haase, Peter Liechti, Rudolf F. Wurster, Quentin Bowes | 1983-07-26 |
| 4306080 | Process for the purification of industrial effluents | Jaroslav Haase, Peter Liechti, Rudolf F. Wurster, Quentin Bowes | 1981-12-15 |
| 4301217 | Method of flameproofing wood with inorganic ammonium salts and dicyandiamide/formaldehyde reaction products | Peter Rohringer | 1981-11-17 |
| 4263146 | Process for removing cationic substances from aqueous solutions | Rudolf F. Wurster | 1981-04-21 |