Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9382198 | Preparation of light-colored isocyanates | Reinhard Halpaap, Tilak Suren Lewkebandara | 2016-07-05 |
| 8563768 | Process for the preparation of isocyanates | Rainer Bruns, Wolfgang Lorenz, Friedhelm Steffens | 2013-10-22 |
| 8378140 | Processes for preparing low-chlorine isocyanates | Frank Diehl, Alexander Schwarz, Rainer Bruns | 2013-02-19 |
| 7615662 | Process for the preparation of isocyanates in the gas phase | Fritz Pohl, Klaus Biskup, Rainer Bruns, Friedhelm Steffens | 2009-11-10 |
| 7541487 | Process for the preparation of isocyanates in the gas phase | Fritz Pohl, Klaus Biskup, Rainer Bruns, Friedhelm Steffens | 2009-06-02 |
| 7019164 | Process for the production of (poly)isocyanates in the gas phase | Martin Friedrich | 2006-03-28 |
| 6930199 | Process for the preparation of diisocyanates | Jürgen Meyn | 2005-08-16 |
| 6838578 | Process for preparing (cyclo)aliphatic isocyanates | Hans-Joachim Leimkühler, Wolfgang Leuckel | 2005-01-04 |
| 6803482 | Process for the production of isocyanates in the gas phase | Marc Jenne, Heiko Herold, Martin Friedrich | 2004-10-12 |
| 6800781 | Process for quenching a gaseous reaction mixture during the gas phase phosgenation of diamines | Heiko Herold, Hans-Joachim Brockhaus, Volker Michele | 2004-10-05 |
| 6706913 | Process for preparing (cyclo)aliphatic isocyanates | Hans-Joachim Leimkühler, Helmut Schmidt | 2004-03-16 |
| 5859146 | Impact-resistant thermoplastic molding materials | Sabine Kielhorn-Bayer, Dietrich Sanger, Friedhelm Lehrich, Peter Rieger | 1999-01-12 |
| 5516935 | Process for the production of diisocyanates | Eric Bischof, Peter Briedenbach, Jurgen Dahmer, Andreas Flink, Attila Molnar | 1996-05-14 |
| 5026789 | Curable impact modified epoxy resin having stabilized multiphase morphology | Thomas Weber, Walter Heckmann, Jurgen Mertes, Helmut Tesch, Volker Altstaedt +3 more | 1991-06-25 |
| 4879409 | Cycloaliphatic diisocyanates, optionally in the form of isomeric mixtures and a process for their preparation | Hartmut Knofel, Michael Brockelt, Stefan Penninger | 1989-11-07 |
| 4879408 | Cycloaliphatic diisocyanates optionally in the form of isomer mixtures and a process for their production | Hartmut Knofel, Michael Brockelt, Stefan Penninger | 1989-11-07 |
| 4847408 | Process for the preparation of (cyclo)aliphatic diisocyanates | Hans-Georg Frosch, Heinrich Grave, Eckart Waldau, Peter Fuhrmann | 1989-07-11 |
| 4786751 | Dissocyanates, diisocyanate mixtures and a process for their production | Hartmut Knofel, Michael Brockelt, Stefan Penninger | 1988-11-22 |
| RE32628 | Curable compositions based on epoxy resins | Helmut Tesch, Manfred Heym, Walter Doerflinger, Peter Neumann, Dietmar Nissen +1 more | 1988-03-22 |
| 4675437 | Cycloaliphatic triisocyanates | Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen | 1987-06-23 |
| 4665150 | Epoxy resin mixtures | Helmut Tesch, Michael Portugall, Gerhard Heinz | 1987-05-12 |
| 4607069 | Curable compositions based on epoxy resins | Helmut Tesch, Manfred Heym, Walter Doerflinger, Peter Neumann, Dietmar Nissen +1 more | 1986-08-19 |
| 4603189 | Triisocyanates and a process for their preparation | Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen | 1986-07-29 |
| 4559398 | Curable epoxy resins | Helmut Tesch, Andreas Henne, Manfred Heym | 1985-12-17 |
| 4507431 | Preparation of crosslinked polyurethane ionomer dispersions | Gunter Eckert | 1985-03-26 |