Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9874476 | Colour recipe calculating method for matt colour standards | Wilhelm Kettler, Peter Jelen | 2018-01-23 |
| 9417187 | Method for determining the surface gloss of a colour standard | Wilhelm Kettler, Peter Jelen | 2016-08-16 |