Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11731454 | Frame for fixing canvas | — | 2023-08-22 |
| 10711345 | Hard coating film for cutting tool | Seong-woo Cho, Dong Youl Lee, Jae-Hoon Kang, Sun-Yong Ahn, Young Heum Kim | 2020-07-14 |
| 4672704 | Frame assembly for collecting royal jelly | Keum P. Hong | 1987-06-16 |