Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5919887 | Decoloration of polyisocyanates containing isocyanurate and diretdione groups | Hermann Graf, Ernst Deuker, Stefan Wolff, Ludwig Schuster, Serge Wack | 1999-07-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5919887 | Decoloration of polyisocyanates containing isocyanurate and diretdione groups | Hermann Graf, Ernst Deuker, Stefan Wolff, Ludwig Schuster, Serge Wack | 1999-07-06 |