Issued Patents All Time
Showing 1–25 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6916897 | POLYADDITION PRODUCTS CONTAINING HYDROXYL AND URETDIONE GROUPS, PROCESS FOR THEIR PREPARATION, THEIR USE FOR THE PRODUCTION OF HIGHLY REACTIVE POLYURETHANE POWDER COATINGS WHICH ARE FREE FROM ELIMINATION PRODUCTS, AND THE POLYURETHANE POWDER COATINGS PRODUCED ACCORDINGLY | — | 2005-07-12 |
| 6908980 | POLYADDITION PRODUCTS CONTAINING HYDROXYL AND URETDIONE GROUPS, PROCESS FOR THEIR PREPARATION, THEIR USE FOR THE PRODUCTION OF HIGHLY REACTIVE POLYURETHANE POWDER COATINGS WHICH ARE FREE FROM ELIMINATION PRODUCTS, AND THE POLYURETHANE POWDER COATINGS PRODUCED ACCORDINGLY | — | 2005-06-21 |
| 6613861 | POLYADDITION PRODUCTS CONTAINING HYDROXYL AND URETDIONE GROUPS, PROCESS FOR THEIR PREPARATION, THEIR USE FOR THE PRODUCTION OF HIGHLY REACTIVE POLYURETHANE POWDER COATINGS WHICH ARE FREE FROM ELIMINATION PRODUCTS, AND THE POLYURETHANE POWDER COATINGS PRODUCED ACCORDINGLY | — | 2003-09-02 |
| 6479613 | Process for the preparation of polyaddition products containing uretdione groups, and their use in polyurethane coating systems | Siegfried Brandt, Klaus Behrendt, Silvia Herda | 2002-11-12 |
| 6437074 | Blocked polyisocyanates, a process for their preparation, and their use | — | 2002-08-20 |
| 6204351 | Blocked polyisocyanates with built-in hals stabilizer | Elmar Wolf | 2001-03-20 |
| 6166164 | Blocked polyisocyanates, a process for their preparation, and their use | — | 2000-12-26 |
| 6051675 | Blocked polyisocyanates, a process for their preparation, and their use | — | 2000-04-18 |
| 5955558 | Blocked polyisocyanates with built-in HALS stabilizer | Elmar Wolf | 1999-09-21 |
| 5945531 | Polyisocyanates containing uretdione groups | — | 1999-08-31 |
| 5939199 | Process for the preparation of heat curable weather-resistant polyurethane powder coatings, and the coatings thus obtained | — | 1999-08-17 |
| 5859164 | Uretdione-functional polyaddition compounds, a process for their preparation, and their use | Joern Weiss, Elmar Wolf, Felix Schmitt | 1999-01-12 |
| 5852154 | Cold-curing, low-solvent or solvent-free 2-component polyurethane/polyurea compositions | Felix Schmitt, Elmar Wolf | 1998-12-22 |
| 5847067 | Uretdione-functional polyisocyanates, a process for their preparation, and their use | — | 1998-12-08 |
| 5750727 | Polyisocyanates containing uretdione groups | — | 1998-05-12 |
| 5728795 | Process for the preparation of blocked polyisocyanates, and their use in polyurethane coating systems | Siegfried Brandt | 1998-03-17 |
| 5719240 | Compounds containing cyclic amidine and uretdione groups, a process for their preparation and the use thereof | Elmar Wolf | 1998-02-17 |
| 5646228 | Process for the preparation of blocked polyisocyanates, and their use in polyurethane coating systems | Siegfried Brandt | 1997-07-08 |
| 5633336 | Polyamines containing urea groups and process for their preparation | Elmar Wolf | 1997-05-27 |
| 5616658 | Process for the production of matt epoxy resin and hybrid powder coatings | Elmar Wolf | 1997-04-01 |
| 5608016 | Salts of pyromellitic acid, and their use as epoxy resin curing agents | Elmar Wolf | 1997-03-04 |
| 5556937 | Salts of pyromellitic acid, a process for their preparation, and their use | Elmar Wolf | 1996-09-17 |
| 5550206 | Polyamines containing urea groups | Elmar Wolf | 1996-08-27 |
| 5541279 | Process for the preparation of blocked polyisocyanates, and their use in polyurethane coating systems | Siegfried Brandt | 1996-07-30 |
| 5506334 | Salts of pyromellitic acid, a process for their preparation and their use | Elmar Wolf | 1996-04-09 |