Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8934099 | Check-tile for colour measurement instruments | Wilhelm Kettler | 2015-01-13 |
| 8922775 | Check-tile for colour measurement instruments | Wilhelm Kettler | 2014-12-30 |
| 8913238 | Check-tile for colour measurement instruments | Wilhelm Kettler | 2014-12-16 |
| 8908182 | Check-tile for colour measurement instruments | Wilhelm Kettler | 2014-12-09 |
| 8908183 | Check-tile for colour measurement instruments | Wilhelm Kettler | 2014-12-09 |
| 7158672 | Recipe calculation method for matt color shades | Wilhelm Kettler | 2007-01-02 |