Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11329146 | Semiconductor device | Yasunari Umemoto, Isao Obu, Kaoru IDENO | 2022-05-10 |
| 11289434 | Semiconductor element and power amplification device | Yasunari Umemoto, Isao Obu, Masao Kondo, Yuichi Saito, Takayuki Tsutsui | 2022-03-29 |
| 11276689 | Semiconductor device and amplifier module | Kenji Sasaki, Masao Kondo, Shinnosuke Takahashi, Yasunari Umemoto, Isao Obu +1 more | 2022-03-15 |
| 11251290 | Bipolar transistor and method for producing the same | Yasunari Umemoto, Atsushi Kurokawa | 2022-02-15 |
| 11240912 | Multilayer wiring substrate | Masao Kondo, Kenji Sasaki | 2022-02-01 |
| 11227941 | Bipolar transistor and method for producing the same | Yasunari Umemoto, Atsushi Kurokawa | 2022-01-18 |
| 11227804 | Semiconductor device | Yasunari Umemoto, Isao Obu, Kaoru IDENO | 2022-01-18 |
| 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 |
| 10868155 | Compound semiconductor device | Kenji Sasaki, Kingo Kurotani, Takashi Kitahara | 2020-12-15 |
| 10855232 | Power amplifier module | Takayuki Tsutsui, Yasunari Umemoto, Isao Obu, Satoshi Tanaka | 2020-12-01 |
| 10777669 | Heterojunction bipolar transistor | Yasunari Umemoto, Isao Obu | 2020-09-15 |
| 10741680 | Bipolar transistor and method for producing the same | Yasunari Umemoto, Atsushi Kurokawa | 2020-08-11 |
| 10665704 | Bipolar transistor and radio-frequency power amplifier module | Isao Obu, Yasunari Umemoto, Masahiro Shibata, Masao Kondo, Takayuki Tsutsui | 2020-05-26 |
| 10629591 | Semiconductor device | Takayuki Tsutsui, Kazuhito Nakai, Yusuke Tanaka | 2020-04-21 |
| 10629712 | Heterojunction bipolar transistor | Yasunari Umemoto, Isao Obu | 2020-04-21 |
| 10541320 | Bipolar transistor and method for producing the same | Yasunari Umemoto, Atsushi Kurokawa | 2020-01-21 |
| 10523161 | Power amplification module | — | 2019-12-31 |
| 10374071 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeru Yoshida, Isao Obu | 2019-08-06 |
| 10297680 | Bipolar transistor and method for producing the same | Yasunari Umemoto, Atsushi Kurokawa | 2019-05-21 |
| 10056476 | Heterojunction bipolar transistor | Yasunari Umemoto, Isao Obu | 2018-08-21 |