Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10875827 | Process for preparing an isocyanate by partly adiabatic phosgenation of the corresponding amine | Thomas Knauf, Juergen Spriewald, Anke Hielscher, Volker Michele, Christian Steffens | 2020-12-29 |
| 10851048 | Process for preparing an isocyanate by partly adiabatically operated phosgenation of the corresponding amine | Thomas Knauf, Christian Steffens, Anke Hielscher, Juergen Spriewald | 2020-12-01 |
| 10435353 | Method for producing isocyanates | Joachim Zechlin, Tim Loddenkemper, Friedhelm Steffens | 2019-10-08 |
| 10329248 | Method for producing 1,5-pentanediisocyanate in the gas phase | Josef Sanders, Martin Ehrig, Reinhard Halpaap, Manfred Keller-Killewald, Armin Schymura | 2019-06-25 |
| 10173970 | Method for producing 1,5-pentanediisocyanate in the gas phase | Josef Sanders, Martin Ehrig, Reinhard Halpaap, Manfred Keller-Killewald, Armin Schymura | 2019-01-08 |
| 10112892 | Process for preparing polyisocyanates | Jürgen Arras, Jan Busch, Christian Steffens, Manfred Keller-Killewald, Holger Conzelmann | 2018-10-30 |
| 8097751 | Process for preparing polyisocyanates by the adiabatic phosgenation of primary amines | Daniel Koch, Spotswood Miller, Ricardo Serra, Jurgen Kirsch, Gerhard Wegener | 2012-01-17 |
| 8079752 | Process and mixing unit for the preparation of isocyanates by phosgenation of primary amines | Andreas Rausch, Christian Steffens, Manfred Keller-Killewald, Matthias Böhm, Joachim C. Ritter +1 more | 2011-12-20 |
| 7612234 | Processes for separating carbon monoxide from a hydrogen chloride-containing gas | Michel Haas, Tim Loddenkemper, Bernd Rüffer | 2009-11-03 |
| 7202384 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Kartin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2007-04-10 |
| 7202378 | Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2007-04-10 |
| 7057071 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1-5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2006-06-06 |
| 7041858 | Process for the production of dinitrotoluene | Juergen Muennig, Bernd Pennemann, Volker Michele, Jesse Caravaggio, John F. Gisch, Jr. | 2006-05-09 |
| 6984762 | Process for the two-step production of dinitrotoluene | Erwin Dieterich, Anke Hielscher, Berthold Keggenhoff, Manfred Keller-Killewald, Jurgen Munnig | 2006-01-10 |
| 6953869 | Process for working up secondary components in the preparation of dinitrotoluene | Jurgen Munnig, Wolfgang Lorenz, Berthold Keggenhoff | 2005-10-11 |
| 6936741 | Process for working up the waste water obtained in the preparation of dinitrotoluene | Jurgen Munnig, Wolfgang Lorenz, Berthold Keggenhoff | 2005-08-30 |
| 6706924 | Process for the production of 1,5-naphthalenediamine | Michael Schelhaas, Katrin Joschek, Manfred Jautelat, Joachim Zechlin | 2004-03-16 |
| 6528690 | Adiabatic process for producing dinitrotoluene | Uwe Klingler, Hans-Georg Pirkl, Thomas Schieb | 2003-03-04 |
| 6258986 | Process for the production of dinitrotoluene | Uwe Klingler, Thomas Schieb, Gerhard Wiechers, Jurgen Zimmerman | 2001-07-10 |