Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6716889 | Process for the preparation of strongly basic anion exchangers using ethylene oxide | Holger Lutjens, Axel Ingendoh, Karl-Rudolf Gassen, Peter Wenzl | 2004-04-06 |
| 6646017 | Process for the preparation of low-bleeding cation exchangers | Reinhold Klipper, Rudolf Wagner, Olaf Halle, Holger Lutjens | 2003-11-11 |
| 6610753 | Process for preparing selective ion exchangers | Holger Lutjens, Axel Ingendoh, Reinhold Klipper | 2003-08-26 |
| 5302660 | Process for the production of viscosity-stable, low-gel highly concentrated elastane spinning solutions | Bernd Klinksiek, Rolf-Volker Meyer, Beatrix Frauendorf, Wolfgang 35e,uml/a/ cker, Hans-Joachim Wollweber +2 more | 1994-04-12 |