Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7994215 | High purity phthalein derivatives and method for preparing same | Francois Scherninski | 2011-08-09 |
| 7518002 | High purity phthalein derivatives and method for preparing same | Francois Scherninski | 2009-04-14 |