Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7576039 | Additive for drilling fluids | Johann Huber, Johann Plank, Jurgen Heidlas, Gregor Keilhofer | 2009-08-18 |
| 6475959 | Method for the rheology control of fluid phases | Gregor Keilhofer, Johann Plank | 2002-11-05 |
| 6354218 | Propellant for large-caliber ammunition | Thomas Weise, Hans-Karl Haak, Paul Schaffers | 2002-03-12 |
| 5152986 | Preparation and use of ion exchange resins loaded with quinolonecarboxylic acid derivatives | Alfred Mitschker, 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, Alfred Mitschker | 1991-10-22 |
| 5012031 | Process for the preparation of tert.-olefins | Bernhard Schleppinghoff, Hans-Ludwig Niederberger, Christian Gabel, Alfred Mitschker | 1991-04-30 |
| 4988738 | Process for the preparation of bifunctional anion exchange resins, new bifunctional anion exchange resins and use thereof | Alfred Mitschker, Harold Heller, Friedrich Werner, Hans-Karl Soest, Gunter Siegers | 1991-01-29 |
| 4952608 | Process for preparing synthetic resins having anion exchanger properties by amidomethylating a backbone polymer containing aromatic nuclei with a specially prepared N-hydroxymethyl phthalimide | Reinhold Klipper | 1990-08-28 |
| 4943420 | Process for recovering gallium | Alfred Mitschker, Heiko Hoffmann, Gunter Lossmann, Andries P. van der Meer, Cornelius J. Smit | 1990-07-24 |
| 4772635 | Bead-shaped crosslinked copolymers containing epoxide groups and basic amino groups, a process for their preparation and their use | Alfred Mitschker, Wolfgang Kreiss | 1988-09-20 |
| 4767850 | Process for the purification of acarbose with polymers | Erich Rauenbusch | 1988-08-30 |
| 4754020 | Process for preparing aromatic diazonium salts by diazotation of amines | Joachim Wolff, Karlheinz Wolf, Reinhold Klipper | 1988-06-28 |
| 4745216 | Process for the production of polyisocyanates | Berthold Keggenhoff, Gunther Ellendt, Marcel Petinaux, Alfred Mitschker | 1988-05-17 |
| 4705637 | Process for reducing the wash water requirement of weakly basic anion exchangers | Harold Heller, Friedrich Martinola | 1987-11-10 |
| 4702744 | Process for the preparation of concentrated solutions of anionic dyestuffs and dyestuff additives by cation exchange with cation exchange resin | Joachim Wolff, Jochen Koll, Karlheinz Wolf, Reinhold Klipper | 1987-10-27 |
| 4695556 | Catalyst resins and process for their preparation | Siegfried Oeckl, Alfred Mitschker, Friedrich Martinola | 1987-09-22 |
| 4666776 | Polymers for the purification of acarbose | Erich Rauenbusch | 1987-05-19 |
| 4587347 | N-phenyl-N'-vinylethyleneureas | Hans-Josef Buysch, Reinhold Klipper, Peter Mues | 1986-05-06 |
| 4563371 | Process for preparing metallized porous solid bodies | Kirkor Sirinyan, Rudolf Merten, Alfred Mitschker | 1986-01-07 |
| 4552954 | Concentrating nikkomicin mixtures | Heinrich F. Moeschler, Christian Golker | 1985-11-12 |
| 4511722 | Process for preparing cyclic N-vinylacylamines | Heinrich Krimm, Hans-Josef Buysch, Reinhold Klipper | 1985-04-16 |
| 4504688 | Process for the preparation of pure alkyl tert-alkyl ethers and hydrocarbon raffinates which are largely free from isoolefins and from alkanols | Jens Herwig, Hans-Volker Scheef, Bernhard Schleppinghoff | 1985-03-12 |
| 4490487 | SO.sub.3 /Imide adducts, process for their preparation and their use as sulphonating agents | Kurt Halcour, Rudolf Wagner | 1984-12-25 |
| 4427794 | Process for the preparation of bead polymers of uniform particle size by polymerization of microencapsulated monomer | Werner Struver | 1984-01-24 |
| 4409421 | Process for the preparation of pure tert.-olefins | Jens Herwig, Bruno Schulwitz, Bernhard Schleppinghoff, Hans-Volker Scheef | 1983-10-11 |