Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12308213 | Core insertion type spiral tube and making method for the same | Hyun-Seok Choi, Jeong Hyun PARK | 2025-05-20 |
| 11710173 | Electronic device for performing payment and operation method therefor | Ik Hyun Kim, Moon-Young Woo, Bo-Kun Choi | 2023-07-25 |
| 9193029 | Method of manufacturing retainer ring for polishing wafer | — | 2015-11-24 |