Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7449198 | Stable salts of O-acetylsalicylic acid with basic amino acids | Gerhard Franckowiak, Hubert Appolt, Gregor Leifker, Wolfram Ledwoch | 2008-11-11 |
| 6914149 | Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization | Claus-Peter Reisinger, Sven Michael Hansen, Peter Fischer | 2005-07-05 |
| 6773724 | Stable salts of O-acetylsalicylic acid with basic amino acids | Gerhard Franckowiak, Hubert Appolt, Gregor Leifker, Wolfram Ledwoch | 2004-08-10 |
| 6734319 | Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization | Claus-Peter Reisinger, Sven Michael Hansen, Peter Fischer | 2004-05-11 |
| 6544441 | Ortho-phenylphenolate concentrates | Peter Wachtler | 2003-04-08 |
| 6294673 | Process for preparing nifedipine | Mathias Berwe, Herbert Diehl, Karl Rittner, Karl-Heinz Wahl | 2001-09-25 |
| 5965472 | Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization | Hans-Josef Buysch, Carsten Hesse, Johann Rechner | 1999-10-12 |
| 5824816 | Recovery of catalyst systems from diarylcarbonate-containing reaction mixtures by melt crystallization | Hans-Josef Buysch, Carsten Hesse, Johann Rechner | 1998-10-20 |
| 5510499 | Process for the isolation of purified ethylene glycol carbonate (EGC) | Christine Mendoza-Frohn, Paul Wagner | 1996-04-23 |
| 5300700 | Process for the production of high-purity bisphenol A | Georg Malamet, Claus Wulff, Alfred Eitel | 1994-04-05 |