| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 6 | |
| #2 | Republic of Korea | 6 | |
| #3 | Japan | 4 | |
| #4 | United States | 4 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | Taiwan | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chun Gyu Chul | 6 |
| #2 | Chun Gyu-Chul | 5 |
| #3 | Jun Kyu-Chul | 4 |
| #4 | Lee Young-Choon | 3 |
| #5 | Jun Gyu Cheol | 3 |
| #6 | Kim Hee-Jun | 3 |
| #7 | Kim Hee Jun | 2 |
| #8 | Kamatani Hiroyasu | 2 |
| #9 | Lee Byong Ho | 2 |
| #10 | Okumura Shinya | 2 |
| Publication | Filing date | Title |
|---|---|---|
| KR20050077983A | Key switch | |
| KR20050040286A | Key-top | |
| TW594814B | Key switch | |
| KR20030088924A | Key switch | |
| KR20030019813A | Key switch | |
| JP2002231090A | Key switch | |
| KR20020045117A | Key switch | |
| KR20000012219A | Key switch |