Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8859117 | Light-permeable heat protection element with aluminate-modified or borate-modified silicon dioxide | Norbert Schwankhaus, Udo Gelderie, Dietrich Pantke, Hartmut Melzer, Peter-Nikolaus Schmitz | 2014-10-14 |
| 8299131 | Silica gel comprising guanidine carbonate | Dietrich Pantke | 2012-10-30 |
| 8088830 | Paper production with modified silica gels as microparticles | Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann +1 more | 2012-01-03 |
| 7708862 | Paper production with modified silica gels as microparticles | Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann +1 more | 2010-05-04 |
| 6964600 | High selectivity colloidal silica slurry | Irina Belov, Gerd Passing, Thomas J. Hunt | 2005-11-15 |
| 6710217 | Method for producing 4-chlorobiphenyl and 4-chlorobiphenyl-specific specifications | Reinhard Langer, Alexander Klausener, Paul Wagner | 2004-03-23 |
| 6387269 | Membrane for separating fluids | Ansgar Eltner, Hans-Georg Gobbel, Andreas Nickel, Masakazu Kondo, Yoshio Morigami +2 more | 2002-05-14 |
| 6271292 | Organic-inorganic hybrid materials | Michael Mager, Harald Kraus | 2001-08-07 |
| 6051051 | Binder-free molecular sieve zeolite granules which contain zeolites of the type lithium zeolite A and lithium zeolite X | Bruno Hees, Gerhard Reiss | 2000-04-18 |
| 6004378 | Oxygen enrichment process | Gerhard Reiss | 1999-12-21 |
| 5998504 | Colloidal metal oxides having blocked isocyanate groups | Stefan Groth, Claus Kobusch, Lutz Schmalstieg, Theodor Engbert, Manfred Bock +1 more | 1999-12-07 |
| 5962358 | Binder-free molecular sieve zeolite granules which contain zeolites of the type lithium zeolite A and lithium zeolite X | Bruno Hees, Gerhard Reiss | 1999-10-05 |
| 5885331 | Process for the adsorption of nitrogen from gas mixtures by means of pressure swing adsorption with zeolites | Gerhard Reiss, Bruno Hees | 1999-03-23 |
| 5656066 | Adsorptive oxygen enrichment of air with mixtures of molecular sieve zeolites | Gerhard Reiss, Bruno Hees | 1997-08-12 |
| 5520726 | Casting investment compounds | Peter Schwabe, Martin Grunwald | 1996-05-28 |
| 5466881 | Process for preparing m-chloroaromatics | Michael Pies, Helmut Fiege, Josef Kasbauer | 1995-11-14 |
| 5434310 | Process for the preparation of acylbenzenes | Helmut Waldmann, Manfred Hajek, Otto Immel, Rudolf Braden | 1995-07-18 |
| 5386067 | Process for separating mixtures of m- and p-dichlorobenzene | Ursula Pentling, Hans-Josef Buysch, Kai Rohlk, Rolf Grosser, Hans-Ingolf Paul | 1995-01-31 |
| 5360922 | Process for the preparation of dialkyl carbonates | Erich Wolters, Heinz Landscheidt, Alexander Klausener | 1994-11-01 |
| 5338861 | Process for the preparation of N-substituted lactams | Artur Botta, Hans-Josef Buysch, Otto Immel | 1994-08-16 |
| 5319124 | Process for the preparation of dialkyl carbonates | Erich Wolters, Heinz Landscheidt, Alexander Klausener | 1994-06-07 |
| 5098448 | Process for the production of molecular sieve granulates | Gunter Ulisch | 1992-03-24 |
| 5087754 | Process for the preparation of N,N-dialkylaniline | Hans-Josef Buysch, Heinrich Pelster, Peter Wimmer | 1992-02-11 |
| 5085840 | Process for the reduction of nitrogen oxides contained in exhaust gases | Wolfgang Held, Axel Konig | 1992-02-04 |
| 5075084 | Process for the removal of iodine and iodine compounds from hydrogen-containing gases and vapors | Jurgen Wilhelm | 1991-12-24 |