Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8309648 | Silicone free defoamer for solvent based coatings | Weiqiu Hu, Frank Oliver Heinrich Pirrung, Chuanjin Zhu, Min Zhu | 2012-11-13 |
| 7902297 | Slip- and leveling agent | Lothar Alexander Engelbrecht, Frank Oliver Heinrich Pirrung, Arend Noordam, Martin Philipoom | 2011-03-08 |
| 7595416 | Phosphoric acid esters and their use as wetting and dispersing agent | Frank Oliver Heinrich Pirrung, Arend Noordam, Elizabeth Loen, Arona Eliane Munneke | 2009-09-29 |