Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5898909 | Ultra high frequency radio communication apparatus | Kunio Yoshihara, Kouhei Morizuka, Mitsuo Konno, Yasuo Ashizawa, Yasuhiro Kuriyama +6 more | 1999-04-27 |
| 5332912 | Heterojunction bipolar transistor | Tetsuro Nozu, Norio Iizuka, Torakiti Kobayashi, Masao Obara | 1994-07-26 |
| 4839612 | High-frequency power amplifier having heterojunction bipolar transistor | — | 1989-06-13 |
| 4739379 | Heterojunction bipolar integrated circuit | Jiro Yoshida, Makoto Azuma | 1988-04-19 |
| 4370180 | Method for manufacturing power switching devices | Makoto Azuma | 1983-01-25 |