Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12403717 | Method for producing a data carrier having a luminescent security element, and data carrier | Thomas Giering, Thomas Happ, Stephan Steinlein, Johann Kecht, Sina SCHOLZ-RIECKE | 2025-09-02 |
| 12151501 | Method for producing a luminescent security marking and luminescent security marking | — | 2024-11-26 |
| 10981406 | Security feature | Johann Kecht | 2021-04-20 |
| 10363767 | Method for marking a feature substance, security feature, document of value and method for verifying said document | Martin Stark | 2019-07-30 |
| 10040995 | Alkali metal and alkaline earth metal niobates and tantalates as security feature substances | Johann Kecht, Stephan Steinlein | 2018-08-07 |
| 9581540 | Spectral luminescence standard for the near infrared region | Johann Kecht | 2017-02-28 |
| 9453162 | Alkali metal and alkaline earth metal niobates and tantalates as security feature substances | Johann Kecht, Stephan Steinlein | 2016-09-27 |
| 9409434 | Security feature | Johann Kecht, Stephan Steinlein | 2016-08-09 |
| 8497012 | Authenticity mark in the form of a luminescent substance | Stephan Heer, Thomas Giering | 2013-07-30 |
| 8367188 | Authenticity mark in the form of luminescent substances | Stephan Heer, Thomas Giering, Gregor Grauvogl | 2013-02-05 |