Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458318 | Polyisocyanate mixtures | Dorota Greszta-Franz, Hans-Josef Laas, Reinhard Halpaap, Dieter Mager | 2016-10-04 |
| 6987158 | Polyadducts containing uretidone groups | Hans-Josef Laas, Reinhard Halpaap, Peter Thometzek, Michael Grahl | 2006-01-17 |
| 6713556 | Dimethylpyrazole-blocked isocyanate mixtures | Eberhard Konig, Reinhard Halpaap, Thomas Klimmasch, Harald Mertes, Joachim Schüll +1 more | 2004-03-30 |
| 6559264 | Malonic acid ester/triazole mixed blocked HDI trimer/formaldehyde stabilization | Eberhard Konig, Thomas Klimmasch | 2003-05-06 |
| 6043332 | Process for the production of light-colored uretdione polyisocyanates | Hans-Josef Laas, Reinhard Halpaap, Ulrich Freudenberg | 2000-03-28 |
| 5959060 | Polyisocyanate-modified polycarboxylic acids and their use as crosslinking agents for epoxy resins | Walter Schafer, Knud Reuter, Hanns P. Muller, Ulrich Freudenberg, Lothar Kahl | 1999-09-28 |
| 5922806 | Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or -2,6-diisocyanatocyclohexane and their use as binders for glass fiber sizings | Harald Blum, Karin Naujoks, Helmut Reiff, Oswald Wilmes, Raymond Audenaert | 1999-07-13 |
| 5883216 | Blocked polyisocyanates containing amide/imide groups and their use in stoving lacquers | Reinhard Halpaap, Hans Schlegel, Jan Mazanek | 1999-03-16 |
| 5847044 | Polyurethane powder coating compositions which have a low stoving temperature | Hans-Josef Laas, Reinhard Halpaap, Ulrich Freudenberg, Hans-Peter Klee | 1998-12-08 |
| 5811190 | Matt polyurethane powder coatings and their use for coating heat resistant substrates | Hans-Josef Laas, Reinhard Halpaap, Ulrich Freudenberg, Hans-Peter Klee | 1998-09-22 |
| 5786419 | Powder coating composition and its use for the preparation of matte coatings | Wolfgang Schultz, Hans-Josef Laas, Walter Schafer, Hans-Peter Klee | 1998-07-28 |
| 5625024 | Branched polysiloxane-polyether-based copolymers, their preparation and use | Sabine Schlitte, Hubertus Eversheim, Gebhard Wagner, Karl-Heinz K asler, Jan Mazanek | 1997-04-29 |
| 5621064 | Uretdione powder coating cross-linking agents having a low melt viscosity | Hans-Josef Laas, Reinhard Halpaap, Wolfgang Schultz | 1997-04-15 |
| 5596066 | Dimeric diol-modified powder coating cross-linking agents containing uretdione groups | Hans-Josef Laas, Reinhard Halpaap, Wolfgang Schultz | 1997-01-21 |
| 5534601 | Polyisocyanate-modified dicarboxylic (poly) anhydrides | Knud Reuter, Walter Schafer, Hanns P. Muller, Lothar Kahl, Manfred Bock | 1996-07-09 |
| 5521250 | Powder coating compositions and their use for the production of coatings | Christian Wamprecht, Jurgen Meixner, Lothar Kahl | 1996-05-28 |
| 5510444 | Powder coating compositions and their use for coating heat-resistant substrates | Reinhard Halpaap, Christian Wamprecht, Manfred Bock, Wolfgang Schultz, Lothar Kahl | 1996-04-23 |
| 5508337 | Powder coating compositions, a process for their preparation, and their use for the coating of heat resistant substrates | Christian Wamprecht, Reinhard Halpaap, Wolfgang Schultz | 1996-04-16 |
| 5492955 | Powder coating compositions and their use for coating heat resistant substrates | Christian Wamprecht, Hans-Josef Laas, Manfred Bock, Wolfgang Schultz, Lothar Kahl | 1996-02-20 |
| 5464921 | Polyisocyanate mixtures, a process for their production and their use for the production of polyurethanes | Hans-Josef Laas, Reinhard Halpaap, Christian Wamprecht, Wolfgang Schultz, Lothar Kahl | 1995-11-07 |
| 5384358 | Process for the production of hydroxy-functional copolymers | Christian Wamprecht, Jurgen Meixner, Gunter Ruf | 1995-01-24 |