| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 5 | |
| #2 | WIPO (World Intellectual Property Organization) | 5 | |
| #3 | Canada | 3 | |
| #4 | EPO (European Patent Office) | 3 | |
| #5 | United States | 1 |
| # | Name | Total Patents |
|---|---|---|
| #1 | French John B | 17 |
| #2 | Hansen Douglas Walter | 5 |
| #3 | Mason Andrew John | 4 |
| #4 | Mason Andrew | 4 |
| #5 | John Mason Andrew | 2 |
| #6 | Gholami Farhad | 1 |
| #7 | Kalyta Gennady H | 1 |
| #8 | Liu Xue Jun | 1 |
| #9 | Mason Andrew J | 1 |
| #10 | Hansen Douglas W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2011143778A1 | Power supply circuits for audio amplifiers | |
| CN101884226A | Acoustic transducer | |
| CN101405924A | Power supply for limited power sources and audio amplifier using power supply | |
| US2007080745A1 | Audio amplifier | |
| CN101040434A | Audio amplifier | |
| CA2585643A1 | Audio amplifier |