Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10178468 | Acoustic system having a housing with adsorbent powder | Karlheinz Bay, Michael Leistner, Waldemar Maysenhölder | 2019-01-08 |
| 9955265 | Electroacoustic driver | Daniel Beer, Lutz Ehrig, Lorenz Betz, Karlheinz Bay, Michael Leistner | 2018-04-24 |
| 6963647 | Controlled acoustic waveguide for soundproofing | Jan Krueger | 2005-11-08 |
| 6793037 | Structured molded parts for sound absorption | Gerhard Babuke, Helmut Fuchs, Xueqin Zha | 2004-09-21 |
| 6385321 | Reactive sound absorber | Jan Krueger, Helmut Fuchs, Roland Lippold | 2002-05-07 |