Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11308068 | Control systems for draft lifecycle | Martin Zurmuehl, Ralf Handl, Tilmann David Kopp, Renzo Colle | 2022-04-19 |
| 10430510 | Method for controlling access to electronic documents based on stateless communication | Martin Zurmuehl, Ralf Handl, Boris Hecker, Jamila Schon | 2019-10-01 |
| 9600681 | Method for controlling access to electronic documents using locks | Martin Zurmuehl, Ralf Handl, Achim Braemer, Edgar Lott | 2017-03-21 |