Issued Patents 2021
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11196394 | Power amplifier module | Yasunari Umemoto, Yuichi Saito, Isao Obu, Takayuki Tsutsui | 2021-12-07 |
| 11164963 | Bipolar transistor and radio-frequency power amplifier module | Isao Obu, Yasunari Umemoto, Masahiro Shibata, Masao Kondo, Takayuki Tsutsui | 2021-11-02 |
| 11107909 | Semiconductor device | Yasunari Umemoto, Isao Obu, Kaoru IDENO | 2021-08-31 |
| 10964693 | Semiconductor device having a plurality of bipolar transistors with different heights between their respective emitter layers and emitter electrodes | Isao Obu, Yasunari Umemoto, Takayuki Tsutsui | 2021-03-30 |
| 10923470 | Semiconductor device | Takayuki Tsutsui, Kazuhito Nakai, Yusuke Tanaka | 2021-02-16 |
| 10886388 | Heterojunction bipolar transistor | Yasunari Umemoto, Isao Obu | 2021-01-05 |