Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5260589 | Semiconductor device having reflecting layers made of varying unit semiconductors | Norikatsu Yamauchi, Takashi Saka, Masumi Hirotani, Toshihiro Kato | 1993-11-09 |
| 5132750 | Light-emitting diode having light reflecting layer | Toshihiro Kato, Takashi Saka | 1992-07-21 |