Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9354364 | Coloring forgery prevention structure and coloring forgery prevention medium | — | 2016-05-31 |
| 9272308 | Method of manufacturing optical device | Chikara Sawamura, Koji Umezaki, Akira Kubo | 2016-03-01 |