Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7384472 | Pigment preparations based on PY 155 | Karl-Heinz Schweikart, Laurent Pourcheron | 2008-06-10 |
| 6443647 | Ink follower piston for a ball-point pen, and a method of manufacturing the same | Jose Duez, Frédéric Bocquenet | 2002-09-03 |