Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7862684 | Use of particulate material derived from mammalian hair in the preparation of paper or paperboard products | Mario Van Wandelen, Willem Drost, Dario M. R. Lo Cascio, Remco W. G. van Willige, Willem Huijser | 2011-01-04 |
| 7655113 | Mixing of a protein hydrolysate derived from keratin-containing material in the wet-end of a papermaking process | Mario Van Wandelen, Willem Drost, Dario M. R. Lo Cascio, Remco W. G. van Willige | 2010-02-02 |
| 7597753 | Cover layers to prevent weed growth | Willem Drost | 2009-10-06 |