Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968252 | Polycyclic compounds | Robert Moretti | 1999-10-19 |
| 5738719 | Pigment compositions of diketopyrrolopyrroles | Olof Wallquist, Ingo Schloder | 1998-04-14 |
| 5492564 | Diketopyrrolopyrrole pigment with high chroma | Ingo Schloder, Olof Wallquist | 1996-02-20 |
| 5476949 | Finely divided highly transparent diketopyrrolopyrrole pigments | Olof Wallquist, Thomas Eichenberger, Ingo Schloder | 1995-12-19 |
| 5424452 | Diketopyrrolopyrroles and pigments thereof | Guy de Weck, Olof Wallquist | 1995-06-13 |
| 5378276 | Diketopyrrolopyrroles containing nitroxyl groups | Laurent Chassot | 1995-01-03 |
| 5342955 | Diketopyrrolopyrroles | Guy de Weck, Olof Wallquist | 1994-08-30 |
| 5271759 | Pigment compositions | Olof Wallquist | 1993-12-21 |
| 5238984 | Dianthraquinonyl compounds | Olof Wallquist, Guy de Weck | 1993-08-24 |
| 5202454 | Process for the manufacture of 1-bromoalkyl hydrocarbyl carbonates | Gerard Sennyey, Jean-Pierre Senet | 1993-04-13 |
| 5200528 | Diketopyrrolopyrroles | Guy de Weck, Olof Wallquist | 1993-04-06 |
| 4966995 | Process for the preparation of chlorides of carboxylic acids | Jeannine Chodorge, Jean-Pierre Senet | 1990-10-30 |
| 4772695 | Process for the preparation of vinyl carbamates | Roy A. Olofson, Jonathan T. Martz | 1988-09-20 |