Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7202378 | Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Dietmar Wastian, 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, Dietmar Wastian, Tim Loddenkemper, Wilfried Pinke +2 more | 2006-06-06 |
| 6706924 | Process for the production of 1,5-naphthalenediamine | Michael Schelhaas, Manfred Jautelat, Joachim Zechlin, Dietmar Wastian | 2004-03-16 |