Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6238943 | Optical semiconductor device and a method of manufacturing the same | Hirohiko Kobayashi, Mitsuru Ekawa, Shouichi Ogita, Haruhisa Soda, Haruhiko Tabuchi +1 more | 2001-05-29 |
| 5987046 | Optical semiconductor device and a method of manufacturing the same | Hirohiko Kobayashi, Mitsuru Ekawa, Shouichi Ogita, Haruhisa Soda, Haruhiko Tabuchi +1 more | 1999-11-16 |
| 5362674 | Method of producing a mesa embedded type optical semiconductor device including an embedded layer at its side wall | — | 1994-11-08 |