Issued Patents All Time
Showing 26–50 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858655 | High-resilient polyurethane foams produced from polyether polyols | Jörg Hofmann, Pramod Gupta, Manfred Dietrich, Hansjurgen Rabe, Jurgen Gronen | 2005-02-22 |
| 6852664 | Double metal cyanide catalysts for the preparation of polyether polyols | Jörg Hofmann, Martin Döbler | 2005-02-08 |
| 6852663 | Double-metal cyanide catalysts for preparing polyether polyols | Joerg Hofmann, Walter Schafer | 2005-02-08 |
| 6833431 | Double-metal cyanide catalysts for preparing polyether polyols | Jörg Hofmann, Walter Schafer | 2004-12-21 |
| 6818587 | Double-metal cyanide catalysts for preparing polyether polyols | Walter Schafer, Jörg Hofmann | 2004-11-16 |
| 6800780 | Method for producing carboxylic acid benzyl esters | Ursula Jansen, Bernd-Ulrich Schenke | 2004-10-05 |
| 6780813 | Process for producing DMC catalysts | Jörg Hofmann, Bernd Klinksiek, Stephan Ehlers, Thorsten Fechtel, Franz Föhles | 2004-08-24 |
| 6707246 | Low-pressure mercury vapor discharge lamp with improved auxiliary amalgam | Willem Johannes Van Den Bogert, Hindrik Hermannus Stel, Johannes Theodorus Jacobus Van Haastrecht, Jeroen Jan Wits, Ronald Arjan Van Den Brakel +1 more | 2004-03-16 |
| 6639093 | Process for the preparation of hydroxybenzoic benzyl esters | Bernd-Ulrich Schenke | 2003-10-28 |
| 6624286 | Double-metal cyanide catalysts containing polyester for preparing polyether polyols | Jörg Hofmann, Pramod Gupta, Robert J. Kumpf, Walter Schafer | 2003-09-23 |
| 6608231 | Double-metal cyanide catalysts for producing polyether polyols | Jörg Hofmann, Pramod Gupta | 2003-08-19 |
| 6600064 | Process for the preparation of hydroxybenzoic benzyl esters | Bernd-Ulrich Schenke | 2003-07-29 |
| 6586566 | Double metal cyanide catalysts for producing polyether polyols | Jörg Hofmann, Pramod Gupta, Walter Schafer, John Lohrenz | 2003-07-01 |
| 6586564 | Double-metal cyanide catalysts for preparing polyether polyols | Walter Schafer, Jörg Hofmann | 2003-07-01 |
| 6569981 | Crystallizing polyether polyols, a method for producing them and use of the same | Walter Schafer, Jörg Hofmann, Pramod Gupta | 2003-05-27 |
| 6555703 | Process for the preparation of carboxylic acid benzyl esters | Bernd-Ulrich Schenke | 2003-04-29 |
| 6528616 | Double metal cyanide catalysts for the production of polyther polyols | Jörg Hofmann, Pramod Gupta | 2003-03-04 |
| 6468939 | Double metal cyanide catalysts for the preparation of polyether polyols | Jörg Hofmann, Pramod Gupta | 2002-10-22 |
| 6414192 | Process for preparing 4-aminodiphenylamine | Michael Schelhaas, Carl Casser, Dietmar Bielefeldt, Joachim Haider, Manfred Jautelat +2 more | 2002-07-02 |
| 6391820 | Bi-metallic-cyanide catalysts used for preparing polyether polyols | Jörg Hofmann, Pramod Gupta, Walter Schafer | 2002-05-21 |
| 6376420 | Double-metal cyanide catalysts for producing polyether polyols | Jörg Hofmann, Pramod Gupta | 2002-04-23 |
| 6350920 | Method for preparing polyether polyols | Hans-Josef Buysch, Manfred Dietrich, Pramod Gupta | 2002-02-26 |
| RE37495 | Substituted 1-arylpyrazoles | Jorg Stetter, Bernd Alig, Stefan Bohm, Achim Bertsch, Christoph Erdelen +4 more | 2002-01-01 |
| 6323375 | Crystalline double metal cyanide catalysts for producing polyether polyols | Jörg Hofmann, Pramod Gupta, Robert J. Kumpf, Walter Schafer, Michael Schneider | 2001-11-27 |
| 6304030 | Low-pressure mercury vapor discharge lamp | Rene Maarten Arjan Driessens | 2001-10-16 |