Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10964693 | Semiconductor device having a plurality of bipolar transistors with different heights between their respective emitter layers and emitter electrodes | Shigeki Koya, Yasunari Umemoto, Takayuki Tsutsui | 2021-03-30 |
| 10957617 | Semiconductor device | Masao Kondo, Yasunari Umemoto, Yasuhisa Yamamoto, Masahiro Shibata, Takayuki Tsutsui | 2021-03-23 |
| 10903803 | Semiconductor device and power amplifier module | Yasunari Umemoto, Masahiro Shibata, Kenichi Nagura | 2021-01-26 |
| 10886388 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2021-01-05 |
| 10879847 | Transmission unit | Masao Kondo, Satoshi Tanaka, Yasuhisa Yamamoto, Takayuki Tsutsui | 2020-12-29 |
| 10873307 | Power amplifier circuit | Masao Kondo, Satoshi Tanaka, Yasuhisa Yamamoto, Takayuki Tsutsui | 2020-12-22 |
| 10855232 | Power amplifier module | Shigeki Koya, Takayuki Tsutsui, Yasunari Umemoto, Satoshi Tanaka | 2020-12-01 |
| 10840236 | Semiconductor device | Kenji Sasaki | 2020-11-17 |
| 10777669 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2020-09-15 |
| 10778159 | Power amplifier and compound semiconductor device | Satoshi Tanaka, Takayuki Tsutsui, Yasunari Umemoto | 2020-09-15 |
| 10707200 | Semiconductor device | Kenji Sasaki, Takayuki Tsutsui, Yasuhisa Yamamoto | 2020-07-07 |
| 10665704 | Bipolar transistor and radio-frequency power amplifier module | Yasunari Umemoto, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2020-05-26 |
| 10665519 | Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packaged | Yasunari Umemoto, Masahiro Shibata | 2020-05-26 |
| 10629712 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2020-04-21 |
| 10594271 | Semiconductor device and power amplifier module | Yasunari Umemoto, Masahiro Shibata, Kenichi Nagura | 2020-03-17 |
| 10475717 | Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packaged | Yasunari Umemoto, Masahiro Shibata | 2019-11-12 |
| 10374071 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya, Shigeru Yoshida | 2019-08-06 |
| 10361666 | Semiconductor device and power amplifier module | Yasunari Umemoto, Masahiro Shibata, Kenichi Nagura | 2019-07-23 |
| 10355114 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeru Yoshida, Masahiro Shibata | 2019-07-16 |
| 10249620 | Semiconductor device and power amplifier circuit | Shigeru Yoshida, Kaoru IDENO | 2019-04-02 |
| 10192862 | Semiconductor device | Kenji Sasaki, Takayuki Tsutsui, Yasuhisa Yamamoto | 2019-01-29 |
| 10163829 | Compound semiconductor substrate and power amplifier module | Yasunari Umemoto, Masahiro Shibata | 2018-12-25 |
| 10134842 | Heterojunction bipolar transistor | Shigeru Yoshida | 2018-11-20 |
| 10056476 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2018-08-21 |
| 9997516 | Semiconductor device and power amplifier circuit | Shigeru Yoshida, Kaoru IDENO | 2018-06-12 |