Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6238943 | Optical semiconductor device and a method of manufacturing the same | Hirohiko Kobayashi, Mitsuru Ekawa, Nirou Okazaki, Haruhisa Soda, Haruhiko Tabuchi +1 more | 2001-05-29 |
| 5987046 | Optical semiconductor device and a method of manufacturing the same | Hirohiko Kobayashi, Mitsuru Ekawa, Nirou Okazaki, Haruhisa Soda, Haruhiko Tabuchi +1 more | 1999-11-16 |
| 5358898 | Method of making a tunable laser diode having a distributed feedback structure | Yuji Kotaki, Manabu Matsuda | 1994-10-25 |
| 5347533 | Optical semiconductor device, method of producing the optical semiconductor device, and laser device using optical semiconductor devices | Toshio Higashi | 1994-09-13 |
| 5255276 | Driver circuit of a tunable laser diode | Haruhiko Tabuchi, Yuji Kotaki | 1993-10-19 |
| 5170402 | Tunable laser diode having a distributed feedback structure | Yuji Kotaki, Manabu Matsuda | 1992-12-08 |