| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 3 | |
| #2 | Brazil | 2 | |
| #3 | Canada | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Mexico | 2 | |
| #6 | United States | 2 | |
| #7 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | AC and DC conversion devices | |
| #2 | Climate change mitigation in buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cho Young-Chang | 14 |
| Publication | Filing date | Title |
|---|---|---|
| BRPI0511228A | power control method using ac power, power control system using ac power and power supply | |
| BRPI0510845A | low voltage control method using an alternating current energy waveform and system for low voltage control |