Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6754979 | Device for drying and thermally treating granulates with an inert gas stream | Ragnhild Pille, Gunter Pipper | 2004-06-29 |
| 6703475 | Method for the continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) | Jürgen Deininger, Walter Gotz, Gunter Pipper | 2004-03-09 |
| 6548626 | Method for preparing polyamides from lactams and polyamide extracts | Ralf Mohrschladt, Volker Hildebrandt | 2003-04-15 |
| 6429279 | Preparation of polyamides | Hans-Harald Hünger, Rainer Neuberg, Gunter Pipper, Thomas Sauer, Axel Wilms | 2002-08-06 |
| 6326457 | Continuous polyamide extraction process | Jörg Erbes, Gunter Pipper | 2001-12-04 |
| 6320021 | Continuous polyamide extraction process | Peter Hildenbrand, Reinhard Lang, Gunter Pipper | 2001-11-20 |
| 6194538 | Process for producing polyamides from aminonitriles | Robert A. Weiss, Dieter Krauss, Dieter Keller, Gunter Pipper, Wolfgang Harder +1 more | 2001-02-27 |
| 5886137 | Preparation of salts of polyaspartic acid and their use in detergents and cleaners | Matthias Kroner, Gunnar Schornick, Uwe Strotmann, Volker Schwendemann, Thomas A. Meyer | 1999-03-23 |
| 5830985 | Preparation of polyaspartic acid | Matthias Kroner, Gunnar Schornick, Hans-Jacob Feindt, Thomas A. Meyer, Udo Metzmann | 1998-11-03 |