Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6264855 | Process for preparing water resistant luminous pigments | Yosuke Kitagawa | 2001-07-24 |
| 6008269 | Ultraviolet hardening type ink compositions with a temperature-sensitive color change property | Yosuke Kitagawa | 1999-12-28 |