Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6307444 | Frequency signal equalizing device, specially for a satellite communications facility | Christian Neumann | 2001-10-23 |
| 6049726 | Planar filter with ferroelectric and/or antiferroelectric elements | Werner Gruenwald, Christian Neumann | 2000-04-11 |
| 5983646 | Cooling apparatus for a high-frequency receiver | Wolfgang Grothe, Claus Schmidt | 1999-11-16 |
| 5912472 | Switchable planar high frequency resonator and filter | Klaus Voigtlaender, Claus Schmidt, Christian Neumann | 1999-06-15 |
| 5770546 | Superconductor bandpass filter having parameters changed by a variable magnetic penetration depth | Wolfgang Grothe, Klaus Voigtlaender, Claus Schmidt | 1998-06-23 |
| 5721195 | Dual mode planar superconductive resonator and filter including a Josephson junction for varying mode coupling | Wolfgang Grothe, Klaus Voigtlaender, Claus Schmidt | 1998-02-24 |
| 5648747 | Planar filter having an overcoupling stripline an integral multiple of a half wavelength in length | Wolfgang Grothe, Stefan Mueller, Claus Schmidt | 1997-07-15 |