Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10928436 | Evaluation of phase-resolved partial discharge | Jan Thomas Palme | 2021-02-23 |
| 10458949 | Method for measuring a stator core of an electric machine and measuring device | — | 2019-10-29 |
| 9488684 | Modular excitation system | Markus Quadranti | 2016-11-08 |
| 9229043 | Partial discharge sensor for a high voltage insulation monitoring device | — | 2016-01-05 |
| 7006639 | Active noise-attenuating duct element | — | 2006-02-28 |
| 6778673 | Tunable active sound absorbers | — | 2004-08-17 |
| 6408078 | Active reactive acoustical elements | — | 2002-06-18 |
| 6088459 | Loudspeaker system with simulated baffle for improved base reproduction | — | 2000-07-11 |
| 6016704 | Electromechanic transducer with integrated pressure sensor | — | 2000-01-25 |
| 5812686 | Device for active simultation of an acoustical impedance | — | 1998-09-22 |
| 5629987 | Loudspeaker system with closed housing for improved bass reproduction | — | 1997-05-13 |
| 5551800 | Device with adjustable buoyancy with pressure compensation | — | 1996-09-03 |
| 5461676 | Device for improving bass reproduction in loudspeaker system with closed housings | — | 1995-10-24 |
| 5327504 | Device to improve the bass reproduction in loudspeaker systems using closed housings | — | 1994-07-05 |