Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4675518 | Optical bistable device | Katsuhiko Oimura, Hiroshi Ogawa, Naotake Nagao | 1987-06-23 |
| 4565924 | Light signal binary device with optical feedback | Hiroshi Ogawa, Naotake Nagao, Katsuhiko Oimura | 1986-01-21 |