Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12083694 | Razor blade with bent portion | Jun Soo Chang | 2024-09-10 |
| 11267149 | Razor blade with bent portion and razor cartridge using the same | Jun Soo Chang | 2022-03-08 |
| 10369714 | Razor blade and razor cartridge using the same | Jun Soo Chang | 2019-08-06 |