Issued Patents All Time
Showing 1–4 of 4 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 | Yousuke Ooyama, Satoshi Hachiya | 2008-09-02 |
| 7408072 | Heteropolycyclic compound and dye | Yousuke Ooyama | 2008-08-05 |
| 4990433 | Metal-containing indoaniline compound and optical recording medium employing the compound | Yuji Kubo | 1991-02-05 |
| 4873332 | Metal-containing indoaniline compound and optical recording medium employing the compound | Yuji Kubo | 1989-10-10 |