Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10143987 | Method for dividing fluid streams | Berthold Keggenhoff, Friedhelm Steffens, Marc Seekamp, Gerhard Ruffert, Jürgen Kern +1 more | 2018-12-04 |
| 7781624 | Process for the preparation of nitrobenzene by adiabatic nitration | Andreas Rausch, Thomas Knauf, Alexandre Racoes | 2010-08-24 |
| 7662634 | Method and device for determining the isomer composition in isocyanate production processes | Jochen Mahrenholtz, Andrea Wimschneider, Hans-Georg Pirkl, Heinz Muller, Stefan Dresely +4 more | 2010-02-16 |
| 7547801 | Process for the continuous preparation of isocyanates | Fritz Pohl, Ricardo Serra, Matthias Ehlers, Gary B. Solak, Kirk J. Bourgeois +8 more | 2009-06-16 |
| 7528283 | Process for preparing diamines and polyamines from the diphenylmethane series | Fritz Pohl, Richard Adamson, Heinz Muller, Rudolf Uchdorf | 2009-05-05 |
| 7495124 | Process for the production of very pure 2,4′-methylenediphenyl diisocyanate | Hans-Georg Pirkl, Walter Meckel, Ulrich Wolf, Matthias Wintermantel, Jochen Mahrenholtz | 2009-02-24 |
| 7368595 | Process for the production of light-colored isocyanates | Stefan Wershofen, Torsten Hagen, Christian Steffens | 2008-05-06 |
| 7030274 | Process for the production of carbodiimide modified organic isocyanates | James W. Rosthauser, James Garrett | 2006-04-18 |
| 6166128 | Color reduction of polymethylene poly (phenylisocyanates) | Rick L. Adkins, Clarence D. Blue, Kirk J. Bourgeois, Mark R. Kratz, Brian H. Peterson +2 more | 2000-12-26 |
| 5484819 | Process for preparing polyamines for lighter color polyisocyanate based foam | Ramon Kalyanaraman, Steven L. Schilling, Clarence D. Blue | 1996-01-16 |
| 5386059 | Process for preparing polyamines for lighter color polyisocyanate based foam | Ramon Kalyanaraman, Steven L. Schilling, Clarence D. Blue | 1995-01-31 |
| 5286760 | Process for reducing impurity levels in methylene diphenyamines | Robert L. Mayen | 1994-02-15 |