Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6218681 | Gallium arsenide phosphide epitaxial wafer and light emitting diode | — | 2001-04-17 |
| 5923054 | Light emitting diode with tilted plane orientation | Yasuji Kobashi, Hitora Takahashi | 1999-07-13 |
| 5856208 | Epitaxial wafer and its fabrication method | Megumi Imai, Hitora Takahashi | 1999-01-05 |
| 5751026 | Epitaxial wafer of gallium arsenide phosphide | Megumi Imai, Tsuneteru Takahashi | 1998-05-12 |
| 5660628 | Method of manufacturing semiconductor epitaxial wafer | Hitora Takahashi | 1997-08-26 |
| 5456765 | Epitaxial wafer of gallium arsenide phosphide | Hisanori Fujita | 1995-10-10 |
| 5103270 | Double hetero type epitaxial wafer with refractive indices | Toshio Ishiwatari, Hisanori Fujita | 1992-04-07 |
| 4946801 | Epitaxial wafer | Yasuji Kobashi | 1990-08-07 |