Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6555646 | Process for preparing polycarbonate | Marcel Puyn, Ralph Stevens | 2003-04-29 |
| 6504000 | Process for preparing polycarbonate | Marcel Puyn | 2003-01-07 |
| 6495654 | Process for preparing polycarbonate | Marcel Puyn | 2002-12-17 |
| 5489639 | Copper salts for laser marking of thermoplastic compositions | Rein Mollerus Faber, Theodorus Lambertus Hoeks | 1996-02-06 |