Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9469732 | Method for producing low-halogen polybiphenylsulfone polymers | Martin Weber, Christian Maletzko, Gerhard Lange, Jörg Erbes, Matthias Dietrich +1 more | 2016-10-18 |
| 9102798 | Method for producing low-halogen polybiphenylsulfone polymers | Martin Weber, Christian Maletzko, Gerhard Lange, Jörg Erbes, Matthias Dietrich +1 more | 2015-08-11 |
| 8450507 | Integrated method for the preparation of trioxane from formaldehyde | Markus Siegert, Neven Lang, Eckhard Stroefer | 2013-05-28 |
| 8378144 | Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol | Markus Siegert, Tobias Kortekamp, Eckhard Stroefer, Neven Lang | 2013-02-19 |
| 8350063 | Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification | Markus Siegert, Neven Lang, Laszlo Szarvas, Franz Niklaus Windlin, Eckhard Stroefer | 2013-01-08 |
| 7456249 | Catalyst, its preparation and the polymerization of cyclic ethers over this catalyst | Stephan Schlitter, Martin Haubner, Michael Hesse, Stefan Kaeshammer, Rolf Pinkos | 2008-11-25 |
| 7449422 | Catalyst, its preparation and the polymerization of cyclic ethers over this catalyst | Stephan Schlitter, Martin Haubner, Michael Hesse, Stefan Käshammer, Rolf Pinkos | 2008-11-11 |
| 7148318 | Method for producing polytetrahydrofurane having a low color indices | Anton Meier, Volkmar Menger | 2006-12-12 |
| 7074944 | Method for producing polytetrahydrofuran | Ulrich Steinbrenner, Martin Haubner, Achim Gerstlauer, Thomas Domschke, Stefan Käshammer | 2006-07-11 |
| 7057080 | Color index of multivalent alcohols by hydrogenation | Matthias Dernbach, Michael Hesse, Steffen Maas | 2006-06-06 |
| 7041752 | Catalyst and method for the production of polytetrahydrofuran | Stephan Schlitter, Walter Dorflinger, Michael Hesse, Rolf Fischer | 2006-05-09 |
| 6870014 | Catalyst and method for producing polytetrahydrofurane | Ulrich Steinbrenner, Thomas Narbeshuber, Martin Haubner, Gerd Linden, Gerhard Cox +6 more | 2005-03-22 |
| 6852869 | Method for the production of polytetrahydrofuran with low color index | Anton Meier, Michael Hesse, Volkmar Menger, Klaus-Peter Pfaff, Arthur Hohn +1 more | 2005-02-08 |
| 6716937 | Method for the single-step production of polytetrahydrofuran and tetrahydrofuran copolymers | Gerd Bohner, Thomas Domschke, Rolf Fischer, Martin Haubner, Ulrich Steinbrenner +1 more | 2004-04-06 |
| 6441110 | Method for producing halogen-free reactive polyisobutene | Thomas Narbeshuber, Karsten Eller, Manfred Barl, Rolf Fischer, Eugen Gehrer | 2002-08-27 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene | Thomas Narbeshuber, Eugen Gehrer, Rolf Fischer, Ulrich Steinbrenner, Shelue Liang | 2002-05-07 |
| 6359108 | Method for polymerizing cyclic ether | Karsten Eller, Frank Stein, Rainer Becker, Klaus-Dieter Plitzko, Rolf Fischer +1 more | 2002-03-19 |
| 6316664 | Process for preparing hydroxy-containing compounds from formic acid esters | Detlef Kratz | 2001-11-13 |
| 6211401 | Process for preparing polytetrahydrofuran | Karsten Eller, Rainer Becker, Klaus-Dieter Plitzko, Rolf Fischer, Frank Stein +2 more | 2001-04-03 |
| 6124368 | Method for producing polytetrahydrofuran | Karsten Eller, Rainer Becker, Klaus-Dieter Plitzko | 2000-09-26 |
| 6111147 | Process for preparing polytetrahydrofuran and derivatives thereof | Karsten Eller, Rainer Becker, Klaus-Dieter Plitzko, Rolf Fischer, Frank Stein +2 more | 2000-08-29 |
| 6103941 | Preparation of 1,4-butanediol | Rolf Fischer | 2000-08-15 |
| 6043338 | Method of producing polyoxytetramethylene glycol | Rolf Fischer, Karsten Eller, Rainer Becker, Klaus-Dieter Plitzko, Gerd Heilen | 2000-03-28 |
| 6002027 | Preparation of 1,2-butylene oxide | Franz Josef Brocker, Rolf Fischer, Peter Lingelbach | 1999-12-14 |
| 5977417 | Preparation of 1,4-butanediol | Rolf Fischer | 1999-11-02 |