Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11141801 | Cutting tool having partially-removed film formed thereon | Seung-Su Ahn, Je-Hun Park, Kyung-Il Kim, Sung Hyun Kim, Sun-Yong Ahn | 2021-10-12 |
| 11123803 | Cutting insert for hard-to-cut material | Se Ung OH, Seung-Su Ahn | 2021-09-21 |
| 11054466 | Semiconductor device test system and semiconductor device test method | — | 2021-07-06 |