Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6741623 | Semiconductor device, semiconductor laser, their manufacturing methods and etching methods | Masayuki Ishikawa | 2004-05-25 |
| 6720583 | Optical device, surface emitting type device and method for manufacturing the same | Masayuki Ishikawa | 2004-04-13 |