Issued Patents All Time
Showing 26–50 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11251290 | Bipolar transistor and method for producing the same | Shigeki Koya, Atsushi Kurokawa | 2022-02-15 |
| 11227941 | Bipolar transistor and method for producing the same | Shigeki Koya, Atsushi Kurokawa | 2022-01-18 |
| 11227804 | Semiconductor device | Shigeki Koya, Isao Obu, Kaoru IDENO | 2022-01-18 |
| 11196394 | Power amplifier module | Shigeki Koya, Yuichi Saito, Isao Obu, Takayuki Tsutsui | 2021-12-07 |
| 11164963 | Bipolar transistor and radio-frequency power amplifier module | Isao Obu, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2021-11-02 |
| 11107909 | Semiconductor device | Isao Obu, Kaoru IDENO, Shigeki Koya | 2021-08-31 |
| 11075289 | Heterojunction bipolar transistor including ballast resistor and semiconductor device | Isao Obu, Takayuki Tsutsui, Satoshi Tanaka | 2021-07-27 |
| 10978579 | Semiconductor device | Daisuke Tokuda, Tsunekazu Saimei, Hiroaki Tokuya | 2021-04-13 |
| 10964693 | Semiconductor device having a plurality of bipolar transistors with different heights between their respective emitter layers and emitter electrodes | Isao Obu, Shigeki Koya, Takayuki Tsutsui | 2021-03-30 |
| 10957617 | Semiconductor device | Masao Kondo, Isao Obu, Yasuhisa Yamamoto, Masahiro Shibata, Takayuki Tsutsui | 2021-03-23 |
| 10903803 | Semiconductor device and power amplifier module | Isao Obu, Masahiro Shibata, Kenichi Nagura | 2021-01-26 |
| 10886388 | Heterojunction bipolar transistor | Shigeki Koya, Isao Obu | 2021-01-05 |
| 10855232 | Power amplifier module | Shigeki Koya, Takayuki Tsutsui, Isao Obu, Satoshi Tanaka | 2020-12-01 |
| 10778159 | Power amplifier and compound semiconductor device | Isao Obu, Satoshi Tanaka, Takayuki Tsutsui | 2020-09-15 |
| 10777669 | Heterojunction bipolar transistor | Shigeki Koya, Isao Obu | 2020-09-15 |
| 10741680 | Bipolar transistor and method for producing the same | Shigeki Koya, Atsushi Kurokawa | 2020-08-11 |
| 10665519 | Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packaged | Isao Obu, Masahiro Shibata | 2020-05-26 |
| 10665704 | Bipolar transistor and radio-frequency power amplifier module | Isao Obu, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2020-05-26 |
| 10636897 | Semiconductor device having a collector layer including first-conductivity-type semiconductor layers | Atsushi Kurokawa, Tsunekazu Saimei | 2020-04-28 |
| 10629712 | Heterojunction bipolar transistor | Shigeki Koya, Isao Obu | 2020-04-21 |
| 10594271 | Semiconductor device and power amplifier module | Isao Obu, Masahiro Shibata, Kenichi Nagura | 2020-03-17 |
| 10559547 | Semiconductor chip | Masahiro Shibata, Daisuke Tokuda, Atsushi Kurokawa, Hiroaki Tokuya | 2020-02-11 |
| 10541320 | Bipolar transistor and method for producing the same | Shigeki Koya, Atsushi Kurokawa | 2020-01-21 |
| 10475717 | Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packaged | Isao Obu, Masahiro Shibata | 2019-11-12 |
| 10388623 | Semiconductor device | Daisuke Tokuda, Tsunekazu Saimei, Hiroaki Tokuya | 2019-08-20 |