Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7420065 | Hetero-polycyclic compounds, and coloring matters, pigments, dyes, color-changing material compositions, and color-changing films, made by using the compounds | Katsuhira Yoshida, Satoshi Hachiya | 2008-09-02 |
| 7408072 | Heteropolycyclic compound and dye | Katsuhira Yoshida | 2008-08-05 |