| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Republic of Korea | 5 | |
| #2 | China | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | Japan | 2 | |
| #5 | Hong Kong | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wang Hwa-Sik | 6 |
| #2 | Wang Hwa Sik | 5 |
| #3 | Hwa-Sik Wang | 2 |
| Publication | Filing date | Title |
|---|---|---|
| KR100546842B1 | Solar collector | |
| KR100509570B1 | Ceiling heat and cooling apparatus | |
| EP1422486A2 | Combined regeneration heating and cooling system | |
| KR100436845B1 | Construction of Regeneration Compound Heating and Cooling System | |
| KR20040045797A | Heating and cooling system | |
| KR20030091368A | Regeneration hybrid heating and cooling system |