Issued Patents All Time
Showing 1–25 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6562463 | One-component stoving composition and use thereof | Martin Melchiors, Wieland Hovestadt, Jochen Bruck, Theodor Engbert | 2003-05-13 |
| 6548445 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Carsten Hesse, Jorg-Dietrich Jentsch, Johann Rechner, Eberhard Zirngiebl | 2003-04-15 |
| 6486363 | Process for the manufacture of bis(4-hydroxyaryl)alkanes | Klaus Berg, Alfred Eitel, Gerhard Fennhoff, Georg Malamet, Clauss Wulff | 2002-11-26 |
| 6428854 | One-component stoving composition and use thereof | Martin Melchiors, Wieland Hovestadt, Jochen Bruck, Theodor Engbert | 2002-08-06 |
| 6350920 | Method for preparing polyether polyols | Manfred Dietrich, Pramod Gupta, Pieter Ooms | 2002-02-26 |
| 6307111 | Method for continuous production of dihydroxydiarylalkanes | Gerhard Fennhoff, Gerd Fengler | 2001-10-23 |
| 6294702 | Method for continuous production of dihydroxydiphenylalkanes | Gerhard Fennhof, Gerd Fengler, Tony van Osselaer | 2001-09-25 |
| 6211417 | Process for preparing bis-(4-hydroxyaryl) alkanes | Gerd Fengler, Frieder Heydenreich, Rob Eek, Gerhard Fennhoff | 2001-04-03 |
| 6191316 | Method for processing mother liquors from the production of bisphenol | Gerhard Fennhoff, Gerd Fengler | 2001-02-20 |
| 6175017 | Process for the production of aryl carbonates | Norbert Schon, Gunther Jeromin | 2001-01-16 |
| 6156919 | Process for the preparation of aliphatic oligocarbonate diols from dimethyl carbonate and aliphatic diols | Reinhard Langer, Wieland Hovestadt, Martin Melchiors | 2000-12-05 |
| 6111140 | Ru--Pd halogen-free catalyzers and method for producing cycloaliphatic amines | Gerhard Darsow, Otto Immel, Reinhard Langer | 2000-08-29 |
| 6080890 | Production of aromatic amines by means of novel hydrogenation catalysts | Reinhard Langer, Manfred Gallus, Joerg-Dietrich Jentsch | 2000-06-27 |
| 6071843 | Process for reactivating catalyst systems containing a platinum group metal | Carsten Hesse, Johann Rechner | 2000-06-06 |
| 6043394 | Process for producing aromatic amines by gaseous phase hydrogenation | Reinhard Langer, Manfred Gallus, Burkhard Lachmann, Franz-Ulrich Von Gehlen | 2000-03-28 |
| 6001768 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Carsten Hesse, Jorg-Dietrich Jentsch, Johann Rechner, Eberhard Zirngiebl | 1999-12-14 |
| RE36432 | Process for the purification of polycarbonate and polyester carbonate solutions | Gerhard Fennhoff, Pieter Ooms, Ralf Pakull | 1999-12-07 |
| 5965472 | Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization | Carsten Hesse, Johann Rechner, Hans-Peter Wirges | 1999-10-12 |
| 5962365 | Process for the manufacture of aromatic amines by gas-phase hydrogenation and catalyst useful thereof | Reinhard Langer, Ursula Pentling | 1999-10-05 |
| 5925791 | Process for producing 4-aminodiphenylamine | Christian Laue, Heinrich Konigshofen, Ulrich Notheis, Pieter Ooms, Ursula Pentling | 1999-07-20 |
| 5900501 | Process for the continuous production of aryl carbonates | Pieter Ooms, Steffen Kuhling, Gottfried Zaby | 1999-05-04 |
| 5877350 | Process for the production of aromatic amines | Reinhard Langer, Ursula Pentling, Paul Wagner | 1999-03-02 |
| 5861107 | Process for the preparation of aliphatic carbonates having a six-membered ring | Gerd Fengler, Karl H. Neumann, Paul Wagner, Martin Melchiors, Wieland Hovestadt | 1999-01-19 |
| 5856554 | Process for producing diaryl carbonates | Carsten Hesse, Johann Rechner | 1999-01-05 |
| 5856516 | Process for the preparation of carbazole | Reinhard Langer, Ulrich Notheis, Alexander Klausener | 1999-01-05 |