Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10975020 | Process for quenching a gaseous reaction mixture obtained in the gas phase phosgenation of diamines | Yuguo Gai, Zhangyong Ming, Qiang Wei, Thomas Bludowsky, Wolfgang Taube +1 more | 2021-04-13 |
| 10836713 | Method for producing isocyanates in the gas phase | Thomas Stetten | 2020-11-17 |
| 10435353 | Method for producing isocyanates | Tim Loddenkemper, Friedhelm Steffens, Dietmar Wastian | 2019-10-08 |
| 8030522 | Process for the production of toluene diisocyanate | Bernd Pennemann, Friedhelm Steffens, Wenbin JI | 2011-10-04 |
| 7517829 | Process for the production of Raney nickel catalysts and their use in the hydrogenation of organic compounds | Gerhard Wegener, Hans Warlimont | 2009-04-14 |
| 7202378 | Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Kai Verkerk, Dietmar Wastian, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2007-04-10 |
| 7202384 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Kai Verkerk, Dietmar Wastian, Kartin 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 | Kai Verkerk, Dietmar Wastian, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2006-06-06 |
| 6706924 | Process for the production of 1,5-naphthalenediamine | Michael Schelhaas, Katrin Joschek, Manfred Jautelat, Dietmar Wastian | 2004-03-16 |
| 6538158 | Process for preparing 1,4-diaminonaphthalene and/or 1,5-diaminoNaphthalene | Lothar Duda, Gerhard Wegener, Andreas Hoffmann, Bodo Temme | 2003-03-25 |