Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877680 | Recording medium with non-porous ink-receiving layer | Mamoru Sakaki, Ryuichi Arai, Takashi Akiya, Shigeo Toganoh, Masahiko Higuma +4 more | 1989-10-31 |
| 4868581 | Ink-receiving composite polymer material | Michiaki Tobita, Naonobu Eto, Masahiko Ishida, Shunzo Kouno, Takashi Akiya +4 more | 1989-09-19 |
| 4801497 | Recording medium | Shunzo Kono, Michiaki Tobita, Masahiko Ishida, Naonobu Eto, Takashi Akiya +4 more | 1989-01-31 |