Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D700702 | Blood measuring instrument | — | 2014-03-04 |
| 6064487 | Method for calculating dye formulations of pigmented effect dyeing tones | Wilhelm Kettler, Hartmut Krause | 2000-05-16 |
| 5929998 | Method for matching a colour formulation | Wilhelm Kettler, Albert Tacke | 1999-07-27 |