| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 8 | |
| #2 | United States | 2 | |
| #3 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Environmental technology | |
| #4 | Control | |
| #5 | Surface technology and coating | |
| #6 | Machine tools | |
| #7 | Engines, pumps and turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Woo-Yeol Kim | 2 |
| #2 | Choi Seong-Chull | 1 |
| #3 | Jae-Young Choi | 1 |
| #4 | Park Cheolwoo | 1 |
| #5 | Kwon Soon-Sung | 1 |
| #6 | Kim Yong Kew | 1 |
| #7 | Kim Woo Yeol | 1 |
| #8 | Jae-Heon Lee | 1 |
| #9 | Chang-Euk Jang | 1 |
| #10 | Hyung-Seuk Ohn | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN103186868A | Method and system for issuing general electronic coupon | |
| KR20000025931A | Adsorber of glass using vaccum |