Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691271 | Indolylazaphthalides and recording materials containing the same | Naoto Yanagihara, Kiyoshi Takeuchi, Toyohisa Oya, Naoki Asanuma, Masanobu Takashima | 1997-11-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691271 | Indolylazaphthalides and recording materials containing the same | Naoto Yanagihara, Kiyoshi Takeuchi, Toyohisa Oya, Naoki Asanuma, Masanobu Takashima | 1997-11-25 |