Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7202288 | Laser-markable pigments containing an absorber coated with a marker | Helge Kniess, Gerhard Pfaff, Matthias Kuntz, Hans-Juergen Brehm | 2007-04-10 |
| 7081282 | Optically variable marking | Matthias Kuntz, Rodney Riddle, John Patrick, Robert Hammond-Smith | 2006-07-25 |
| 6924077 | Colored inscription and marking of plastics and surface coatings | Matthias Kuntz | 2005-08-02 |
| 6727308 | Laser-markable plastics | Helge Kniess, Dieter Heinz, Gerhard Pfaff, Matthias Kuntz | 2004-04-27 |
| 6376577 | Laser-markable plastics | Helge Kniess, Dieter Heinz, Gerhard Pfaff, Matthias Kuntz | 2002-04-23 |
| 6291551 | Laser-markable plastics | Helge Kniess, Dieter Heinz, Gerhard Pfaff, Matthias Kuntz | 2001-09-18 |