Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5886803 | Bilateral optical transmission system and optical transceiver for pulse information | Katsuyuki Yamamoto, Shu Yamamoto, Yotaro Yatsuzuka | 1999-03-23 |
| 5557604 | Cell delay absorbing circuit | Motoharu Usumi | 1996-09-17 |
| 4729004 | Semiconductor photo device | Kazuo Sakai, Yuichi Matsushima, Yukio Noda | 1988-03-01 |
| 4484144 | Semiconductor light amplifier | Yukio Nakagome, Kitsutaro Amano | 1984-11-20 |
| 4383266 | Avalanche photo diode | Kazuo Sakai, Yuichi Matsushima, Shigeyuki Akiba | 1983-05-10 |
| 4340966 | Semiconductor laser with buffer layer | Shigeyuki Akiba, Yasuharu Suematsu, Shigehisa Arai, Masanobu Kodaira, Yoshio Itaya +3 more | 1982-07-20 |
| 4274103 | Avalanche photodiode with semiconductor hetero structure | Kazuo Sakai, Shigeyuki Akiba | 1981-06-16 |