Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1077905 | Book cover with surface ornamentation | — | 2025-06-03 |
| D1077906 | Book cover with surface ornamentation | — | 2025-06-03 |
| 11727825 | Braille teaching material and method of manufacturing same | In-sik Seo | 2023-08-15 |
| D976861 | Portable sound player | — | 2023-01-31 |
| 11538359 | Braille teaching material and method of manufacturing same | In-sik Seo | 2022-12-27 |