Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5796883 | Optical integrated circuit and method for fabricating the same | Kiichi Hamamoto, Tatsuya Sasaki, Takeshi Takeuchi, Masako Hayashi, Keiro Komatsu +1 more | 1998-08-18 |
| 5521994 | Semiconductor optical waveguide-integrated light-receiving device | Takeshi Takeuchi, Keiro Komatsu, Masako Yamamoto, Kiichi Hamamoto | 1996-05-28 |
| 5457327 | Avalanche photodiode with an improved multiplication layer | — | 1995-10-10 |
| 5432361 | Low noise avalanche photodiode having an avalanche multiplication layer of InAlAs/InGaAlAs | — | 1995-07-11 |
| 4684969 | Heterojunction avalanche photodiode | — | 1987-08-04 |