| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 5 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | United States | 3 | |
| #4 | Australia | 1 | |
| #5 | China | 1 | |
| #6 | Japan | 1 | |
| #7 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Electrical machinery and energy | |
| #5 | Furniture and games | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Servomotors | |
| #3 | Unspecified technologies | |
| #4 | Refrigerators | |
| #5 | Special electric heating or lighting | |
| #6 | Installations for obtaining water | |
| #7 | Office furniture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lee Yun-Boon | 11 |
| #2 | Lee Yun Boon | 3 |
| #3 | Yun-Boon Lee | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2005031199A1 | Slide spool-type valve | |
| US6983760B2 | Vaned spool type directional control valve and four-way reversible valve for cooling cycle system using the same | |
| EP1490614A1 | Four-way reversing valve |