Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11506919 | Integrated faraday rotator | Matteo Cherchi, Alexander Stefanov Petrov, Dirk Jalas, Mikko Harjanne, Timo Aalto | 2022-11-22 |
| 7004299 | Process for identifying an embossed image of a coin in an automatic coin machine | Markus Adameck, Michael Hossfeld | 2006-02-28 |
| 6819410 | Process for identifying an embossed image of a coin in an automatic coin tester | Markus Adameck, Michael Hossfeld | 2004-11-16 |
| 5973823 | Method for the mechanical stabilization and for tuning a filter having a photonic crystal structure | Hans Koops, Wolfgang Dultz | 1999-10-26 |
| 5502135 | Copolymers based on dicarboximides, alkenyl isocyanates and/or alkenylurethanes | Stefan Beckmann, Rudolf Zentel, Michael Robert Doerr | 1996-03-26 |
| 5024784 | Device for reversible optical data storage using polymeric liquid crystals | Joachim H. Wendorff | 1991-06-18 |
| 5023859 | Optical data storage apparatus and method utilizing an amorphous polymer which exhibits photochromic properties | Norbert Rau, Joachim H. Wendorff | 1991-06-11 |
| 4896292 | Apparatus for the reversible, optical storage of data | Joachim H. Wendorff | 1990-01-23 |
| 4886718 | Device for reversible optical data storage | Joachim H. Wendorff | 1989-12-12 |
| 4837745 | Process for the reversible optical storage of data | Joachim H. Wendorff, Bernd Reck | 1989-06-06 |