Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11643361 | Method of increasing strength of glass substrate for optical filter and tempered-glass optical filter made thereby | Deok Young Park, Jae Young Hwang, Hak Chul Kim, Tea Joo Ha | 2023-05-09 |