Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868088 | Photographic element with back layer containing matting agents | Toshiaki Aono, Takeshi Shibata | 1989-09-19 |
| 4857443 | Photographic element with benzoguanamine-formaldehyde polymer particles | Toshiaki Aono, Takeshi Shibata | 1989-08-15 |