Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6195370 | Optical transmission device and method for driving laser diode | Hiroaki Hanawa | 2001-02-27 |
| 6195371 | Optical transmission device and method for driving laser diode | Hiroaki Hanawa | 2001-02-27 |
| 5386310 | Parallel optical switching apparatus | Yuuichi Ono, Katuaki Chiba | 1995-01-31 |
| 5283846 | Optical isolator, optical circuit, and rare-earth-doped fiber optical amplifier | Takashi Toyonaka, Shinji Tsuji, Yuichi Ono | 1994-02-01 |
| 4997243 | Method of mounting a light emitting chip and an optical fiber on a photoelectric device | Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Satoru Ishii, Haruo Kugimiya +1 more | 1991-03-05 |
| 4920262 | Photoelectric device with leads | Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Satoru Ishii, Haruo Kugimiya +1 more | 1990-04-24 |
| 4803361 | Photoelectric device with optical fiber and laser emitting chip | Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Satoru Ishii, Haruo Kugimiya +1 more | 1989-02-07 |
| 4779281 | Light emitting chip and optical communication apparatus using the same | Hiroshi Naka, Ichiro Seko, Shuji Kobayashi | 1988-10-18 |
| 4701927 | Light emitting chip and optical communication apparatus using the same | Hiroshi Naka, Ichiro Seko, Shuji Kobayashi | 1987-10-20 |