Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8671739 | Indicator material and indicator device comprising said indicator material | — | 2014-03-18 |
| 8585983 | Halogen and heavy metal-free composition for a humidity indicating device and humidity indicating device containing the same | Stefan Dick | 2013-11-19 |
| 8518344 | Halogen and heavy metal-free humidity indicating composition and humidity indicator card containing the same | Stefan Dick | 2013-08-27 |