Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8295656 | Method and apparatus for compensating polarization-dependent frequency shifts in optical waveguides | Martin Schell, Norbert Keil, Huihai Yao | 2012-10-23 |
| 6853790 | Optical waveguides derived from a combination of poly(perfluorocyclobutanes) and polymeric cyanates | Monika Bauer, Jörg Bauer, Christian Dreyer, Norbert Keil | 2005-02-08 |
| 6757469 | Temperature insensitive optical waveguide device | Monika Bauer, Jörg Bauer, Jürgen Schneider, Christian Dreyer, Huihai Yao +1 more | 2004-06-29 |
| 6716958 | Waveguide systems or structures or parts thereof, containing polycyanate copolymers prepared from polyfunctional cyanates and fluorinated monocyanates | Monika Bauer, Jörg Bauer, Christian Dreyer, Norbert Keil | 2004-04-06 |
| 6233377 | Digital optical switch | Norbert Keil, Huihai Yao | 2001-05-15 |
| 6215918 | Thermo-optical switch | Norbert Keil, Huihai Yao, Hans-Peter Nolting | 2001-04-10 |