Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6852197 | Wet strong tissue paper | Hans Wallenius, Sussan Sandberg, Oliver Struck | 2005-02-08 |
| 6702923 | Wet strength agent and method for production thereof | Christian Biermann, Heribert J. Macherey, Arne Andersson | 2004-03-09 |
| 6376578 | Epihalohydrin-based resins having a reduced halogen content | Andreas Pingel | 2002-04-23 |
| 5876579 | Electrodialysis treatment | — | 1999-03-02 |
| 5643430 | Electrodialysis treatment | — | 1997-07-01 |
| 5516885 | Epihalohydrin-based resins having a reduced halogen content | Andreas Pingel | 1996-05-14 |
| 4777224 | Anionic polyurethanes | Horst Schurmann | 1988-10-11 |