Issued Patents All Time
Showing 1–6 of 6 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, 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 | Joachim Zechlin, Dietmar Wastian, Kartin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2007-04-10 |
| 7118653 | Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column | Bill Brady, Friedhelm Steffens, Berthold Keggenhoff, Gerhard Ruffert | 2006-10-10 |
| 7108770 | Process for the purification of toluene diisocyanate incorporating a dividing-wall distillation column for the final purification | Marcus Paul Grün, Bill Brady, Berthold Keggenhoff, Hans-Peter Schal | 2006-09-19 |
| 7057071 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1-5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Dietmar Wastian, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke +2 more | 2006-06-06 |
| 6458972 | Process for the preparation of macrocyclic esters | Horst Surburg, Dirk Müller, Stephan Klein, Christine Mendoza-Frohn, Georg Ronge | 2002-10-01 |