Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359075 | Quinophthalone compound | Tsukasa Ohyama, Yasushi Shimokawa, Keisuke Takuma, Isamu Ghoda, Hitoshi Koshida | 1994-10-25 |
| 5296445 | Dye for heat-sensitive transfer record, ink composition for heat-sensitive transfer record, and transfer sheet | Tsukasa Ohyama, Yasushi Shimokawa, Keisuke Takuma, Isamu Ghoda, Hitoshi Koshida +4 more | 1994-03-22 |