Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10703630 | Process for preparing chlorine from HCI | Martin Karches, Kati Bachmann, Lothar Seidemann, Knud Jacobsen | 2020-07-07 |
| 9610567 | Process for regenerating a catalyst comprising ruthenium oxide for the oxidation of hydrogen chloride | Guido Henze, Heiko Urtel, Martin Karches, Thorsten von Fehren, Toni Kustura | 2017-04-04 |
| 9156024 | Catalyst comprising ruthenium and silver and/or calcium for the oxidation of hydrogen chloride | Guido Henze, Heiko Urtel, Martin Karches | 2015-10-13 |
| 8440856 | Method for treating residues from the production of isocyanates | Michael Bock, Eckhard Stroefer | 2013-05-14 |
| 8252253 | Process for recovering ruthenium from used ruthenium oxide-comprising catalysts | Guido Henze, Heiko Urtel, Martin Karches | 2012-08-28 |
| 8163265 | Mechanically stable catalyst based on alpha-alumina | Olga Schubert, Lothar Seidemann, Martin Karches, Thomas Grassler, Martin Sohn | 2012-04-24 |
| 8097232 | Method for producing chlorine | Armin Diefenbacher, Hartwig Voss, Olga Schubert, Lothar Seidemann, Martin Karches +2 more | 2012-01-17 |
| 7927080 | Method for operating a liquid ring compressor | Christian Müller, Martin Fiene, Oliver Huttenloch, Eckhard Stroefer | 2011-04-19 |
| 7910517 | Mechanically stable catalyst based on alpha-alumina | Olga Schubert, Lothar Seidemann, Martin Karches, Thomas Grassler, Martin Sohn | 2011-03-22 |
| 7897806 | Method for producing polyisocyanates | Thorsten Rohde, Eckhard Stroefer, Jochem Henkelmann | 2011-03-01 |
| 7819949 | Process for extracting (chlorinated) hydrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene | Heiner Schelling, Juergen Ciprian, Filip Deberdt, Martin Karches, Olga Schubert | 2010-10-26 |
| 7736598 | Reactor and method for producing chlorine from HCl | Lothar Seidemann, Olga Schubert, Eckhard Stroefer, Martin Fiene, Christian Walsdorff +1 more | 2010-06-15 |
| 7704469 | Method for the recovery of ruthenium from used ruthenium oxide-containing catalysts | Olga Schubert, Heiko Urtel, Michael Hesse, Claus Hofmann, Iris Kristalis | 2010-04-27 |
| 7659430 | Method for separating hydrogen chloride and phosgene | Andreas Woelfert, Carsten Knoesche, Hans-Juergen Pallasch, Eckhard Stroefer, Hans-Martin Polka +1 more | 2010-02-09 |