Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6917457 | Process of fabricating semiconductor light emitting device | Nobuyuki Otsuka, Shigeo Yoshii, Toshiya Yokogawa | 2005-07-12 |
| 6778308 | Process of fabricating semiconductor light emitting device | Nobuyuki Otsuka, Shigeo Yoshii, Toshiya Yokogawa | 2004-08-17 |
| 6256331 | Semiconductor laser device, optical communication system using the same, and method for producing compound semiconductor | Masato Ishino, Yasushi Matsui | 2001-07-03 |
| 6110756 | Method for producing semiconductor laser | Nobuyuki Otsuka, Masato Ishino, Yasushi Matsui | 2000-08-29 |
| 6104738 | Semiconductor laser and process for producing the same | Nobuyuki Otsuka, Masato Ishino, Yasushi Matsui, Yuichi Inaba | 2000-08-15 |
| 5960257 | Method distributed feedback semiconductor laser for fabricating | Masato Ishino, Nobuyuki Otsuka, Yasushi Matsui | 1999-09-28 |
| 5856207 | Method for producing a semiconductor laser | Nobuyuki Otsuka, Masato Ishino, Yasushi Matsui | 1999-01-05 |
| 5764682 | Distributed feedback semiconductor laser and method for fabricating the same | Masato Ishino, Nobuyuki Otsuka, Yasushi Matsui | 1998-06-09 |
| 5621747 | Multi quantum well semiconductor laser and optical communication system using the same | Nobuyuki Otsuka, Masato Ishino, Yasushi Matsui | 1997-04-15 |
| 5568501 | Semiconductor laser and method for producing the same | Nobuyuki Otsuka, Masato Ishino, Yasushi Matsui | 1996-10-22 |
| 5539766 | Distributed feedback semiconductor laser | Masato Ishino, Nobuyuki Otsuka, Yasushi Matsui | 1996-07-23 |