Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7183429 | Preparation and use of iminodisuccinic acid ammonium metal salts | Torsten Groth, Ralf-Johann Moritz, Thomas Klein, Thomas Menzel, Wolfgang Wirth | 2007-02-27 |
| 7053129 | Process for preparing monodisperse anion exchangers | Reinhold Klipper, Werner Struver, Ulrich Schnegg, Rudiger Seidel, Holger Lutjens | 2006-05-30 |
| 6699913 | Process for preparing monodisperse anion exchangers having strongly basic functional groups | Reinhold Klipper, Ulrich Schnegg, Rudiger Seidel, Hans-Karl Soest, Holger Lutjens | 2004-03-02 |
| 6667349 | Method for producing osmotically and mechanically stable gel-like anion exchangers | Holger Lutjens, Reinhold Klipper, Georg Martin, Michael Holzbrecher | 2003-12-23 |
| 6365683 | Process for preparing monodisperse crosslinked bead polymers | Wolfgang Podszun, Lothar Feistel, Olaf Halle, Claudia Schmid | 2002-04-02 |
| 5612383 | Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids | Harold Heller, Franz-Rudolf Minz, Reinhold Klipper, Heiko Hoffmann | 1997-03-18 |
| 5464875 | Process for preparing weakly-basic anion exchangers and reagents suitable for this purpose | Reinhold Klipper, Stefan Antons, Guido Steffan, Werner Struver, Holger Lutjens | 1995-11-07 |
| 5441646 | Process of removing sulfate ions from water with a poly(meth)acrylamide exchange resin | Harold Heller, Franz-Rudolf Minz, Reinhold Klipper, Heiko Hoffmann | 1995-08-15 |
| 5414020 | Process for the preparation of anion exchange resins of the poly(meth)acrylamide type | Harold Heller, Friedrich Werner, Axel Ingendoh | 1995-05-09 |
| 5175193 | Process for the preparation of weakly acid cation exchange resins | Harold Heller, Friedrich Werner, Herbert Diehl, Axel Schafer | 1992-12-29 |
| 5152986 | Preparation and use of ion exchange resins loaded with quinolonecarboxylic acid derivatives | Peter M. Lange, Arundev H. Naik, Hubert Rast, Martin Scheer, Herbert Voege | 1992-10-06 |
| 5059306 | Process for removing pure aromatics | Hans-Joachim Kramer, Bruno Schulwitz, Werner Horlitz, Peter M. Lange | 1991-10-22 |
| 5012031 | Process for the preparation of tert.-olefins | Bernhard Schleppinghoff, Hans-Ludwig Niederberger, Christian Gabel, Peter M. Lange | 1991-04-30 |
| 4999112 | Removal of thiamine monophosphate from a solution of thiamine | Walter Dobuler, Wolfgang Schul, Joachim Paust | 1991-03-12 |
| 4988738 | Process for the preparation of bifunctional anion exchange resins, new bifunctional anion exchange resins and use thereof | Peter M. Lange, Harold Heller, Friedrich Werner, Hans-Karl Soest, Gunter Siegers | 1991-01-29 |
| 4943420 | Process for recovering gallium | Peter M. Lange, Heiko Hoffmann, Gunter Lossmann, Andries P. van der Meer, Cornelius J. Smit | 1990-07-24 |
| 4885418 | Process for removing metal halides from liquid organic water-immiscible substances | Sigurd Hartung, by Birgit Hartung-Merse, heir, Uwe Beck, Ulrich Kappler, Andreas Grafe | 1989-12-05 |
| 4853191 | Process for the removal of sulfur-containing gases | Wilhelm Bruening, Rudolf Uchdorf | 1989-08-01 |
| 4772635 | Bead-shaped crosslinked copolymers containing epoxide groups and basic amino groups, a process for their preparation and their use | Peter M. Lange, Wolfgang Kreiss | 1988-09-20 |
| 4745216 | Process for the production of polyisocyanates | Berthold Keggenhoff, Gunther Ellendt, Marcel Petinaux, Peter M. Lange | 1988-05-17 |
| 4695556 | Catalyst resins and process for their preparation | Siegfried Oeckl, Peter M. Lange, Friedrich Martinola | 1987-09-22 |
| 4563371 | Process for preparing metallized porous solid bodies | Kirkor Sirinyan, Peter M. Lange, Rudolf Merten | 1986-01-07 |