| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United States | 4 | |
| #4 | China | 3 | |
| #5 | Republic of Korea | 3 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Amplifiers | |
| #2 | Loudspeakers and microphones | |
| #3 | Pulse technique |
| # | Name | Total Patents |
|---|---|---|
| #1 | Risbo Lars | 21 |
| #2 | Putzeys Bruno | 20 |
| #3 | Tinggaard Carsten | 3 |
| #4 | Putzeys Bruno Johan Georges | 1 |
| #5 | Halvorsen Morten | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2020173699A1 | Loudspeaker motor with improved linearity | |
| EP3723387A1 | A loudspeaker with a non-uniform suspension and an enforcement element | |
| US2020313633A1 | An amplifier with a compensator with a network of at least third order | |
| CN111466080A | Amplifier with at least a second order filter in the control loop | |
| CN111448754A | Amplifier circuit | |
| US2019149920A1 | Method of controlling loudspeaker diaphragm excursion |