| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | EPO (European Patent Office) | 11 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Australia | 1 | |
| #5 | Canada | 1 | |
| #6 | China | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Audio-visual technology | |
| #4 | Computer technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakagawa Shin | 26 |
| #2 | Shin Nakagawa | 3 |
| Publication | Filing date | Title |
|---|---|---|
| WO2005112243A1 | Switching power supply device | |
| US2004120163A1 | Switching power supply apparatus | |
| WO9949560A1 | Power supply | |
| EP1355410A1 | A power supply apparatus | |
| EP0795860A2 | Apparatus for reproducing audio signals | |
| EP0706299A2 | A method for reproducing audio signals and an apparatus therefor |