Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5475237 | Light emitting device having first and second cladding layers with an active layer and carrier blocking layer therebetween | Masafumi Ozawa | 1995-12-12 |
| 5423943 | Selective etching method, optoelectronic device and its fabricating method | Masafumi Ozawa | 1995-06-13 |
| 5420446 | Optoelectronic semiconductor laser device having compound semiconductor first and second layers | Masafumi Ozawa | 1995-05-30 |
| 5373175 | Ohmic electrode and a light emitting device | Masafumi Ozawa, Satoshi Ito | 1994-12-13 |