Issued Patents All Time
Showing 51–75 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6919293 | Double metal cyanide catalysts for producing polyether polyols | Pieter Ooms, Christian Steinlein, Stephan Ehlers | 2005-07-19 |
| 6878661 | Bimetallic-cyanide catalysts used for preparing polyether polyols | Pieter Ooms, Pramod Gupta, Walter Schafer | 2005-04-12 |
| 6858655 | High-resilient polyurethane foams produced from polyether polyols | Pramod Gupta, Manfred Dietrich, Hansjurgen Rabe, Jurgen Gronen, Pieter Ooms | 2005-02-22 |
| 6852664 | Double metal cyanide catalysts for the preparation of polyether polyols | Pieter Ooms, Martin Döbler | 2005-02-08 |
| 6835687 | Method for producing double metal cyanide (DMC) catalysts | Stephan Ehlers, Bernd Klinksiek, Thorsten Fechtel, Matthias Ruhland, Jürgen Scholz +2 more | 2004-12-28 |
| 6833431 | Double-metal cyanide catalysts for preparing polyether polyols | Pieter Ooms, Walter Schafer | 2004-12-21 |
| 6818587 | Double-metal cyanide catalysts for preparing polyether polyols | Walter Schafer, Pieter Ooms | 2004-11-16 |
| 6806345 | Aliphatic polycarbonate homo-and co-polymers produced by DMC catalysis and the process for their production | Walter Schafer, Christian Steinlein | 2004-10-19 |
| 6780813 | Process for producing DMC catalysts | Bernd Klinksiek, Stephan Ehlers, Thorsten Fechtel, Franz Föhles, Pieter Ooms | 2004-08-24 |
| 6776925 | Process for the preparation of polyether polyols | Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski +1 more | 2004-08-17 |
| 6670406 | Process for producing polyether polyols | Stephan Ehlers, Bernd Klinksiek, Bert Klesczewski, Christian Steinlein, Lars Obendorf +2 more | 2003-12-30 |
| 6646100 | Aliphatic polycarbonate homo-and co-polymers produced by DMC catalysis and the process for their production | Walter Schafer, Christian Steinlein | 2003-11-11 |
| 6624286 | Double-metal cyanide catalysts containing polyester for preparing polyether polyols | Pramod Gupta, Robert J. Kumpf, Pieter Ooms, Walter Schafer | 2003-09-23 |
| 6624321 | Process for the preparation of polyether polyols | Uwe Denninger, Pramod Gupta | 2003-09-23 |
| 6617419 | Long-chain polyether polyols with a high proportion of primary oh groups | Pramod Gupta, Manfred Dietrich | 2003-09-09 |
| 6608231 | Double-metal cyanide catalysts for producing polyether polyols | Pieter Ooms, Pramod Gupta | 2003-08-19 |
| 6586566 | Double metal cyanide catalysts for producing polyether polyols | Pieter Ooms, Pramod Gupta, Walter Schafer, John Lohrenz | 2003-07-01 |
| 6586564 | Double-metal cyanide catalysts for preparing polyether polyols | Walter Schafer, Pieter Ooms | 2003-07-01 |
| 6569981 | Crystallizing polyether polyols, a method for producing them and use of the same | Walter Schafer, Pramod Gupta, Pieter Ooms | 2003-05-27 |
| 6528616 | Double metal cyanide catalysts for the production of polyther polyols | Pieter Ooms, Pramod Gupta | 2003-03-04 |
| 6492565 | Process for the preparation of polyether polyols | Uwe Denninger, Pramod Gupta | 2002-12-10 |
| 6486361 | Method for preparing polyether polyols | Stephan Ehlers, Manfred Dietrich, Pramod Gupta, Christian Steinlein, Horst Zwick | 2002-11-26 |
| 6482993 | Method for producing long chain polyether polyols without reprocessing | Pramod Gupta | 2002-11-19 |
| 6468939 | Double metal cyanide catalysts for the preparation of polyether polyols | Pieter Ooms, Pramod Gupta | 2002-10-22 |
| 6458918 | Method for producing partially crystalline polyether polyols | Walter Schafer, Pramod Gupta, Hanns P. Muller, Harald Pielartzik | 2002-10-01 |