Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5518539 | Process for the preparation of synergistic pigment mixtures | Zhimin Hao, John S. Zambounis, Bernhard Medinger | 1996-05-21 |
| 4749795 | Phenyl substituted pyrrolinones | Johannes Pfenninger, Alain C. Rochat | 1988-06-07 |