| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | WIPO (World Intellectual Property Organization) | 5 | |
| #3 | Republic of Korea | 4 | |
| #4 | China | 2 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Furniture and games | |
| #4 | Thermal processes | |
| #5 | Chemical engineering | |
| #6 | Environmental technology | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Venting or aerating devices | |
| #3 | Spraying devices | |
| #4 | Unspecified technologies | |
| #5 | Sanitary equipment | |
| #6 | Domestic heating systems | |
| #7 | Separation | |
| #8 | Water treatment | |
| #9 | Domestic plumbing installations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Choi Yuk Nam | 17 |
| #2 | Nam Choi Yuk | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2020386352A1 | Cap loosening prevention device | |
| KR20180045766A | Safe-off valve | |
| KR101733058B1 | Safe-off valve | |
| KR20170011825A | Adapter of shower | |
| US2012312404A1 | Branch pipe | |
| US2011148093A1 | Pipe coupling device | |
| WO2011071312A2 | Fluid-splitting apparatus | |
| KR20090012887A | Filter assembly | |
| US2009267345A1 | Pipe coupling devices |