Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6919487 | Bis(4-hydroxyaryl)alkanes | Rainer Neumann, Rolf Lanze, Frieder Heydenreich, Michael Prein | 2005-07-19 |
| 6906227 | Bisphenol phenol adducts | Rainer Neumann, Rolf Lanze, Frieder Heydenreich, Michael Prein | 2005-06-14 |
| 6855794 | Polycarbonate substrates | Steffen Kuhling, Franky Bruynseels, Dirk Van Meirvenne, René de Cleyn | 2005-02-15 |
| 6835798 | Method of producing polycarbonates | Steffen Kuhling, Franky Bruynseels, Dirk Van Meirvenne, René de Cleyn | 2004-12-28 |
| 6828465 | Method for producing bisphenols | Rainer Neumann, Rolf Lanze, Frieder Heydenreich, Michael Prein | 2004-12-07 |
| 6815524 | Polycarbonate substrates | Steffen Kuhling, Franky Bruynseels, Dirk Van Meirvenne, René de Cleyn | 2004-11-09 |
| 6774268 | Substance mixture containing bisphenol A | Rainer Neumann, Frieder Heydenreich, Michael Prein | 2004-08-10 |
| 6723881 | Method for conditioning ion exchangers | Rainer Neumann, Frieder Heydenreich, Michael Prein, Gerhard Fennhoff, Ulrich Schnegg +3 more | 2004-04-20 |
| 6723885 | Bisphenol production | Frieder Heydenreich, Michael Prein, Rainer Neumann, Gerhard Fennhoff, Johan Vaes | 2004-04-20 |
| 6710211 | Method for the production of bisphenol-a | Frieder Heydenreich, Michael Prein, Rainer Neumann | 2004-03-23 |
| 6706788 | Flame-resistant polycarbonate moulding materials which are dimensionally stable at high temperatures and have high flow line strength | Thomas Eckel, Dieter Wittmann, Heinrich Alberts, Klaus Horn | 2004-03-16 |
| 6696542 | Polycarbonate substrates | Steffen Kuhling, Franky Bruynseels, Dirk Van Meirvenne, René de Cleyn | 2004-02-24 |
| 6683223 | Fluidised bisphenol dust | Rainer Neumann, Nikolai Kostyszyn, Rolf Lanze, Frieder Heydenreich, Michael Prein | 2004-01-27 |
| 6590128 | Initiation method of a method for producing 2,2-bis(4-hydroxyphenyl)propane | Rainer Neumann, Frieder Heydenreich, Michael Prein, Hans-Ludwig Fofonka | 2003-07-08 |
| 6417318 | Process for the removal of dissolved oxygen from phenol | Frieder Heydenreich, Rudolf Wagner | 2002-07-09 |
| 6320016 | Use of polycarbonates containing iodine phenyl carbonate for producing special shaped parts | Wolfgang Ebert, Heinrich Alberts, Dieter Wittmann, Thomas Eckel | 2001-11-20 |
| 6057394 | Thermoplastic compositions with improved X-ray contrast | Herbert Eichenauer, Heinrich Alberts, Dieter Wittmann, Thomas Eckel, Peter Kruger | 2000-05-02 |
| 5849827 | Extremely finely divided inorganic powders as flame retardants in thermoplastic moulding compositions | Thomas Eckel, Dieter Wittmann, Heinrich Alberts | 1998-12-15 |
| 5840111 | Nanodisperse titanium dioxide, process for the production thereof and use thereof | Gerhard Wiederhoft, Kai Butje, Peter-Joachim Barenthien, Heinrich Alberts | 1998-11-24 |