Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10099937 | Conversion of metal carbonate to metal chloride | Helmut Eckert, Renate Elena Kellermann, Viktor Scherer, Martin Schiemann, Guenter Schmid +1 more | 2018-10-16 |
| 7091370 | Process for the preparation of diaryl carbonates | Claus-Peter Reisinger, Sven Michael Hansen | 2006-08-15 |
| 6992222 | Process for the preparation of quaternary salt phenolate solutions | Claus-Peter Reisinger, Sven Michael Hansen | 2006-01-31 |
| 6986816 | Method for removing deposits from chemical reactors | Claus-Peter Reisinger, Sven Michael Hansen, Konrad Triebeneck, Joachim Helbig | 2006-01-17 |
| 6914149 | Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization | Claus-Peter Reisinger, Sven Michael Hansen, Hans-Peter Wirges | 2005-07-05 |
| 6852872 | Process for producing diaryl carbonates | Claus-Peter Reisinger, Sven Michael Hansen | 2005-02-08 |
| 6740781 | Process for separating reaction mixtures and recycling quaternary salts and bases | Sven Michael Hansen, Claus-Peter Reisinger | 2004-05-25 |
| 6734278 | Production of polyester carbonates | Silke Kratschmer, Wolfgang Alewelt, Friedrich-Karl Bruder, Wilfried Haese, Rolf Wehrmann +2 more | 2004-05-11 |
| 6734319 | Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization | Claus-Peter Reisinger, Sven Michael Hansen, Hans-Peter Wirges | 2004-05-11 |
| 6734325 | Process for the separation of reaction mixtures and the recirculation of quaternary salts | Claus-Peter Reisinger, Sven Michael Hansen, Michael Traving | 2004-05-11 |
| 6727393 | Process for the preparation of organic solutions | Claus-Peter Reisinger, Sven Michael Hansen, Michael Traving | 2004-04-27 |
| 6706797 | Polycarbonate molding compounds with good demolding properties and molded bodied and semifinished products produced from the same | Wolfgang Ebert, Ralf Kaufmann, Christoph Schwemler, Wilfried Haese, Martin Döbler +1 more | 2004-03-16 |
| 5885787 | Process for preparing optically active amines | Hauke Smidt, Andreas Fischer, Rolf Schmid, Uwe Stelzer | 1999-03-23 |
| 5268509 | Process for the preparation of an iron catalyst and a process for the preparation of primary amines by the hydrogenation of nitriles using said iron catalyst | Otto Immel, Dietrich Liebsch, Hans-Helmut Schwarz, Stephan Herman Wendel | 1993-12-07 |
| 4895595 | Direct smelting process for non-ferrous metal sulfide ores | — | 1990-01-23 |
| 4540432 | Continuous process of melting sponge iron | Martin Hirsch, Harry Serbent | 1985-09-10 |
| 4506087 | Method for the continuous preparation of alkoxysilanes | Reiner Groh, Hans-Joachim Vahlensieck | 1985-03-19 |
| 4436823 | Silica gels incorporating insolubilized reagents | Alfred Blumcke, Hans-Joachim Vahlensieck | 1984-03-13 |
| 4435211 | Process of blowing high-oxygen gases into a molten bath which contains non-ferrous metals | Werner Schwartz | 1984-03-06 |
| 4397688 | Continuous process of smelting metallic lead directly from lead- and sulfur-containing materials | Werner Schwartz | 1983-08-09 |
| 4376649 | Continuous process of smelting metallic lead directly from lead-and sulfur-containing materials | Werner Schwartz | 1983-03-15 |
| 4361541 | Method for extraction of uranium from ores | Hubert Bings, Fritz Kampf, Roland Thome, Gerhard Wargalla, Gunter Winkhaus +2 more | 1982-11-30 |
| 4301027 | Silica gels incorporating insolubilized reagents | Alfred Blumcke, Hans-Joachim Vahlensieck | 1981-11-17 |
| 4266971 | Continuous process of converting non-ferrous metal sulfide concentrates | Werner Schwartz, Heinrich Traulsen | 1981-05-12 |
| 4251282 | Method of preparing dye pigments | Hans-Joachim Vahlensieck, Alfred Blumcke | 1981-02-17 |