Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6208447 | Optical receiver | Katsuichi Oosawa | 2001-03-27 |
| 6160253 | Photo detector having a plurality of semiconductor layers | Katsuich Oosawa | 2000-12-12 |
| 4675518 | Optical bistable device | Haruo Misumi, Hiroshi Ogawa, Naotake Nagao | 1987-06-23 |
| 4565924 | Light signal binary device with optical feedback | Haruo Misumi, Hiroshi Ogawa, Naotake Nagao | 1986-01-21 |