| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | Australia | 3 | |
| #3 | Republic of Korea | 3 | |
| #4 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Venting or aerating devices | |
| #3 | Unspecified technologies | |
| #4 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kim Woongki | 6 |
| #2 | Kim Ung Gi | 3 |
| #3 | Lee Jong-Hwan | 2 |
| Publication | Filing date | Title |
|---|---|---|
| KR20040067211A | Arc welder with a built―in gas alternation provision apparatus | |
| KR20040044756A | Air cooling type torch using magnetic force | |
| KR20040024226A | An Impulse Valve Structure of Apparatus for Supplying Inert Gas Alternatively | |
| WO0181036A1 | Apparatus and a method for alternately supplying different inert gases to a welding torch |