Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10144242 | Method for checking a value document, value document, use thereof, and value document system | Thomas Giering, Johann Kecht, Wolfgang Rauscher | 2018-12-04 |
| 10040995 | Alkali metal and alkaline earth metal niobates and tantalates as security feature substances | Johann Kecht, Kai Uwe Stock | 2018-08-07 |
| 9908360 | Security feature and method for producing a security feature | Johann Kecht | 2018-03-06 |