| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Republic of Korea | 44 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Waveguides | |
| #2 | Transmission | |
| #3 | Telephonic communication | |
| #4 | Resonators | |
| #5 | Selecting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hwang Gyu Han | 25 |
| #2 | Hwang Kyu Han | 5 |
| #3 | Hwang Gyu-Han | 3 |
| #4 | Hwang Gyu Hwan | 2 |
| #5 | Yoo Myeong Jae | 1 |
| #6 | Son Young-Il | 1 |
| #7 | Son Yeon Gil | 1 |
| #8 | Park Jong Jin | 1 |
| #9 | Hwang Kyu-Han | 1 |
| #10 | Lee Jung Hyung | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR100794923B1 | Dielectric filter | |
| KR20010106575A | Dielectric duplexer | |
| KR20010038219A | A duplexer | |
| KR20010038220A | A ceramic filter | |
| KR20010038221A | A ceramic filter | |
| KR20010038222A | A ceramic filter | |
| KR20010038223A | A ceramic filter | |
| KR20010018612A | A dielectric filter | |
| KR20010018615A | A dielectric filter | |
| KR20010018611A | A dielectric filter | |
| KR20010018610A | A dielectric filter | |
| KR20010018614A | A dielectric filter | |
| KR20010018613A | A dielectric filter | |
| KR20000039104A | Dielectric filter | |
| KR20000039105A | Dielectric filter | |
| KR20000037918A | Dielectric filter | |
| KR20000037919A | Dielectric filter | |
| KR20000037915A | Jig for measuring duplexer | |
| KR20000037920A | Dielectric filter | |
| KR20000037921A | Band elimination filter |