Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6456345 | Light controlling apparatus | — | 2002-09-24 |
| 5956170 | Optical unit and production thereof | Hideharu Miyagaki | 1999-09-21 |
| 5471339 | Electrochromic diaphragm device | Yasuo Nishida, Akio Yasuda | 1995-11-28 |
| 5463496 | Image pickup optical system which minimizes the effects of spurious signals | — | 1995-10-31 |
| 5293542 | Iris for video camera | Yoshinori Tomita | 1994-03-08 |
| 4878737 | Optical low-pass filter | — | 1989-11-07 |