Assignee
Inventors
- Ho-sik Cho (12 patents)
- Jeong-jin Song (5 patents)
- Il-kang NA (6 patents)
- Sun-eung Park (9 patents)
- Hyun-cheol Park (75 patents)
- Tae-kwang Um (21 patents)
- Cheol-ju Hwang (29 patents)
- Ji Won YANG (13 patents)
US Patent 10415990 · Granted Sep 17, 2019