Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38415 | Use of N-(aminoalkyl) pyrrolidines as catalysts for the polyisocyanate polyaddition process | Richard Weider | 2004-02-03 |
| 6472447 | Stabilized, finely disperse low-viscosity polymer polyols with a high content of polystyrene or polystyrene copolymers | Klaus Lorenz, Manfred Dietrich, Michael Brockelt, Robert J. Kumpf, Jurgen Gronen +1 more | 2002-10-29 |
| 5594066 | Low-viscosity, stable, agglomerate-free polymer polyols, a process for their preparation and their use in producing polyurethane plastics | Torsten Heinemann, Manfred Dietrich, Gundolf Jacobs, Mark R. Kratz, Josef Sanders +1 more | 1997-01-14 |
| 5554662 | Low viscosity polymer polyols a process for their production as well as the manufacture of polyurethane from materials | Josef Sanders, Mark R. Kratz, Manfred Dietrich, Torsten Heinemann, Helmut Woynar +1 more | 1996-09-10 |
| 5274114 | Preparation and use of 3, (4)-substituted pyrrolidines as catalysts for the polyisocyanate polyaddition process | Richard Weider, Andreas Ruckes | 1993-12-28 |
| 5134217 | Use of N-(aminoalkyl) pyrrolidines as catalysts for the polyisocyanate polyaddition process | Richard Weider | 1992-07-28 |