Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501104 | High speed semiconductor photodetector | — | 2002-12-31 |
| 6489177 | Modulator-integrated semiconductor laser and method of fabricating the same | — | 2002-12-03 |
| 6391671 | Method of producing an optical semiconductor device having a waveguide layer buried in an InP current blocking layer | Yasutaka Sakata | 2002-05-21 |
| 6319638 | Semiconductor device manufacturing method of accurately performing alignment of patterning, mask for exposure | — | 2001-11-20 |
| 6228671 | Process for production of semiconductor laser grating | — | 2001-05-08 |
| 6222867 | Optical semiconductor device having waveguide layers buried in an InP current blocking layer | Yasutaka Sakata | 2001-04-24 |
| 6204078 | Method of fabricating photonic semiconductor device using selective MOVPE | — | 2001-03-20 |
| 5811838 | Electro-absorption type semiconductor optical modulator | — | 1998-09-22 |
| 4829346 | Field-effect transistor and the same associated with an optical semiconductor device | Kensuke Kasahara, Tomoji Terakado, Akira Suzuki, Tomohiro Itoh | 1989-05-09 |