Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886775 | Heat transfer dye-receiving sheet | Nobuhiko Minagawa | 1989-12-12 |
| 4873220 | Heat-sensitive transfer material | Takeshi Nakamine | 1989-10-10 |
| 4830447 | Optical wavelength conversion device | Kozi Kamiyama, Yoji Okazaki, Masaki Okazaki, Syozo Takeuchi | 1989-05-16 |