Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10875827 | Process for preparing an isocyanate by partly adiabatic phosgenation of the corresponding amine | Thomas Knauf, Juergen Spriewald, Volker Michele, Dietmar Wastian, Christian Steffens | 2020-12-29 |
| 10851048 | Process for preparing an isocyanate by partly adiabatically operated phosgenation of the corresponding amine | Thomas Knauf, Christian Steffens, Dietmar Wastian, Juergen Spriewald | 2020-12-01 |
| 7645900 | Process for the preparation of isocyanates | Wolfgang Lorenz, Matthias Boehm, Richard Adamson, Friedhelm Steffens | 2010-01-12 |
| 6984762 | Process for the two-step production of dinitrotoluene | Erwin Dieterich, Berthold Keggenhoff, Manfred Keller-Killewald, Jurgen Munnig, Dietmar Wastian | 2006-01-10 |