Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5160953 | Camera system | Tomonori Iwashita | 1992-11-03 |
| 5119119 | Data imprinting device | Kenichiro Amano, Jiro Kazumi, Kenji Itoh, Masaaki Ishihara | 1992-06-02 |
| 5077569 | Close-up photography device | Hidefumi Notagashira, Masaaki Ishihara | 1991-12-31 |