Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5991473 | Waveguide type semiconductor photodetector | Kazuaki Nishikata | 1999-11-23 |
| 5932890 | Field effect transistor loaded with multiquantum barrier | Kenichi Iga | 1999-08-03 |
| 5926585 | Waveguide type light receiving element | Kazuaki Nishikata, Takehiko Nomura | 1999-07-20 |
| 5920079 | Semiconductive light-emitting device having strained MQW with AlGaInAs barriers | Hitoshi Shimizu, Kazuaki Nishikata, Toru Fukushima | 1999-07-06 |
| 5789765 | Photo diode providing high-linearity signal current in response to light receiving signal | Kazuaki Nishikata | 1998-08-04 |
| 5789760 | Multiquantum barrier Schottky junction device | Kenichi Iga | 1998-08-04 |
| 5739543 | Optical semiconductive device with inplanar compressive strain | Hitoshi Shimizu | 1998-04-14 |
| 5608230 | Strained superlattice semiconductor photodetector having a side contact structure | Yoshiyuki Hirayama, Kazuaki Nishikata | 1997-03-04 |
| 5583878 | Semiconductor optical device | Hitoshi Shimizu | 1996-12-10 |
| 5572043 | Schottky junction device having a Schottky junction of a semiconductor and a metal | Hitoshi Shimizu, Yoshiyuki Hirayama | 1996-11-05 |
| 5521935 | Strained superlattice light emitting device | — | 1996-05-28 |
| 5470786 | Semiconductor laser device | Masayuki Iwase | 1995-11-28 |
| 5432124 | Method of manufacturing compound semiconductor | Kazuaki Nishikata, Yuji Hiratani | 1995-07-11 |
| 5394424 | Semiconductor laser device | Tetsuro Ijichi, Ranjit S. Mand, Jingming Xu | 1995-02-28 |
| 5383213 | Semiconductor device with current confinement structure | Masayuki Iwase, Kenichi Iga | 1995-01-17 |
| 5362974 | Group II-VI material semiconductor optical device with strained multiquantum barriers | Kenichi Iga | 1994-11-08 |
| 5319661 | Semiconductor double heterostructure laser device with InP current blocking layer | Masayuki Iwase | 1994-06-07 |
| 5251224 | Quantum barrier semiconductor optical device | Masayuki Iwase | 1993-10-05 |
| 5214662 | Semiconductor optical devices with pn current blocking layers of wide-band gap materials | Masayuki Iwase | 1993-05-25 |
| 5173912 | Double-carrier confinement laser diode with quantum well active and SCH structures | Masayuki Iwase, Randit S. Mand | 1992-12-22 |