Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639102 | Process for producing polyisocyanates of the diphenyl methane series having a reduced color value | Torsten Hagen, Daniel Koch, Rudolf Uchdorf, Stefan Wershofen | 2003-10-28 |