Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7311759 | Process for purifying off-gases of a melamine plant | Frank Schröder, Hartmut Bucka, Christoph Neumüller | 2007-12-25 |
| 7041822 | Method for purifying a melamine melt | — | 2006-05-09 |
| 7022848 | Process for the production of melamine | Hartmut Bucka, Ferdinand Koglgruber | 2006-04-04 |
| 6870051 | Process for purifying melamine-containing ammonia | — | 2005-03-22 |
| 6870050 | Method for the production of melamine | Hartmut Bucka, Faramarz Bairamijamal | 2005-03-22 |
| 6815545 | Method for producing melamine | Hartmut Bucka, Ferdinand Koglgruber | 2004-11-09 |
| 6790956 | Method for producing pure melamine | — | 2004-09-14 |
| 6603001 | Process for preparing solid melamine | — | 2003-08-05 |
| 6586629 | Method of introducing melamine off-gases into a urea plant | — | 2003-07-01 |
| 6410727 | Method for purifying melamine | — | 2002-06-25 |
| 6380385 | Process for the preparation of pure melamine | Lorenzo Canzi, Martin Mullner | 2002-04-30 |
| 6355797 | Process for cooling melamine | — | 2002-03-12 |
| 5721363 | Process for the production of highly pure melamine | Lorenzo Canzi, Aldo Canzi, Silvano Giacomuzzo, Mario Virardi, Martin Mullner | 1998-02-24 |
| 5087384 | Melamine preparation and stable dispersion of melamine in polyether polyols | Heinrich Horacek, Friedl Heger | 1992-02-11 |