| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Republic of Korea | 7 | |
| #2 | United States | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | China | 1 | |
| #5 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Furniture and games | |
| #3 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Hats | |
| #2 | Physical training equipment | |
| #3 | Optical systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kim Doo Tae | 12 |
| #2 | Lee Su Young | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR102050313B1 | A Hat with adjustable visor | |
| KR101669500B1 | Hat with rotary type capil | |
| KR101623886B1 | A golf cap with variable visor | |
| KR20160055289A | The hat equipped with a folding canopy | |
| KR20160037282A | The hat equipped with a folding canopy | |
| KR20160037281A | Shade hat equipped with sunglasses | |
| KR101011137B1 | Optical connector for assembling in the field |