Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4619889 | Image forming method | Hideo Yuyama | 1986-10-28 |
| 4542086 | Color diffusion transfer element with hydroquinone type compound | Nobutaka Ohki, Masakazu Morigaki, Tsutomu Hamaoka | 1985-09-17 |
| 4495270 | Color diffusion transfer photographic element | Masakazu Moriguchi | 1985-01-22 |
| 4486528 | Color diffusion transfer photographic element with redox dye releasers | Masakazu Morigaki | 1984-12-04 |
| 4429031 | Color diffusion transfer photographic element | Masakazu Morigaki, Tsutomu Hamaoka, Nobutaka Ohki | 1984-01-31 |
| 4267250 | Color diffusion transfer photographic element | Seiki Sakanoue, Kokichi Waki, Osamu Takahashi, Asao Nakatsuka | 1981-05-12 |