Issued Patents All Time
Showing 26–50 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7148295 | Carboxy-functional crosslinkers for epoxy-functional powder-lacquer binding agents | Hans-Josef Laas, Christoph Gürtler, Michael Grahl, Peter Thometzek, James Rawlins | 2006-12-12 |
| 7148374 | Elimination-free powder coating crosslinking agents | Dorota Greszta-Franz, Christoph Gürtler, Michael Schelhaas, Michael Grahl | 2006-12-12 |
| 7098289 | Isocyanates containing uretdione groups | Hans-Josef Laas, Frank Richter, Jürgen Köcher | 2006-08-29 |
| 7087676 | Blocked polyisocyanates | Jan Mazanek, Markus Mechtel, Thomas Klimmasch, Christoph Thiebes | 2006-08-08 |
| 7067654 | Preparation of polyisocyanates containing uretdione groups | Frank Richter, Hans-Josef Laas, Andreas Hecking | 2006-06-27 |
| 7060817 | Sulfonamide anions as catalysts for NCO oligomerization | Jürgen Köcher | 2006-06-13 |
| 6987158 | Polyadducts containing uretidone groups | Hans-Josef Laas, Peter Thometzek, Michael Grahl, Hans-Ulrich Meier-Westhues | 2006-01-17 |
| 6797800 | Method of dimerizing isophorone diisocyanate | Hans-Josef Laas, Frank Richter, Jürgen Köcher | 2004-09-28 |
| 6777523 | Highly functional polyisocyanate mixtures which are dispersible in water | Hans-Josef Laas, Martin Brahm | 2004-08-17 |
| 6767958 | Modified polyisocyanates | Hans-Josef Laas | 2004-07-27 |
| 6720400 | Process for the preparation of polyisocyanates with a biuret structure | Dieter Mager, Siegfried Oeckl, Harald Mertes | 2004-04-13 |
| 6713556 | Dimethylpyrazole-blocked isocyanate mixtures | Eberhard Konig, Thomas Klimmasch, Hans-Ulrich Meier-Westhues, Harald Mertes, Joachim Schüll +1 more | 2004-03-30 |
| 6590098 | Method of preparing aliphatic polyisocyanates with uretdione, isocyanurate and iminooxadiazindione structures | Frank Richter, Jürgen Köcher, Hans-Josef Laas | 2003-07-08 |
| 6444778 | Process for the production of uretdione polyisocyanates with improved monomer stability | Hans-Josef Laas, Dieter Mager | 2002-09-03 |
| 6426414 | Polyether-modified polyisocyanate mixtures having improved dispersibility in water | Hans-Josef Laas, Christian Wamprecht | 2002-07-30 |
| 6423777 | Powder coating cross-linking agents of high functionality which contain uretdione groups and free isocyanate groups | Hans-Josef Laas, Ulrich Freudenberg, Michael Grahl | 2002-07-23 |
| 6395925 | Process for purifying organic isocyanates, the organic isocyanates so purified and their use | Karsten Danielmeier, Dieter Mager | 2002-05-28 |
| 6391161 | Method for reducing the chlorine content of low molecular weight isocyanates | Karsten Danielmeier, Dieter Mager, Martin Brahm, Eric Hoffman | 2002-05-21 |
| 6392001 | Process for the production of light-stable polyisocyanates containing allophanate groups | Harald Mertes, Josef Pedain | 2002-05-21 |
| 6297343 | Powder coating crosslinking agents containing uretdione groups and free isocyanate | Hans-Josef Laas, Ulrich Freudenberg, Michael Grahl | 2001-10-02 |
| 6281322 | Coating compositions containing alkoxysilanes | Stefan Groth, Markus Mechtel, Lutz Schmalstieg, Philip E. Yeske | 2001-08-28 |
| 6222066 | Process for decreasing the chlorine content of organic isocyanates | Karsten Danielmeier, Harald Leps, Dieter Mager, Martin Brahm, Reinhold Klipper +1 more | 2001-04-24 |
| 6100326 | Use of special isocyanates for preparing aqueous polyurethane coatings | Frank Richter, Michael Sonntag, Manfred Bock | 2000-08-08 |
| 6043332 | Process for the production of light-colored uretdione polyisocyanates | Hans-Josef Laas, Hans-Ulrich Meier-Westhues, Ulrich Freudenberg | 2000-03-28 |
| 5883216 | Blocked polyisocyanates containing amide/imide groups and their use in stoving lacquers | Hans Schlegel, Jan Mazanek, Hans-Ulrich Meier-Westhues | 1999-03-16 |