Issued Patents All Time
Showing 1–25 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11978786 | Bipolar transistor and radio-frequency power amplifier module | Yasunari Umemoto, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2024-05-07 |
| 11949003 | Semiconductor device | Yasunari Umemoto, Kaoru IDENO, Shigeki Koya | 2024-04-02 |
| 11817356 | Semiconductor device | Yasunari Umemoto, Shigeki Koya, Kaoru IDENO | 2023-11-14 |
| 11735541 | Semiconductor device with protective protrusion | Kazuya Kobayashi, Atsushi Kurokawa, Hiroaki Tokuya, Yuichi Saito | 2023-08-22 |
| 11705875 | Power amplifier module | Shigeki Koya, Yasunari Umemoto, Yuichi Saito, Takayuki Tsutsui | 2023-07-18 |
| 11705509 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2023-07-18 |
| 11658180 | 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 | 2023-05-23 |
| 11631758 | Semiconductor device | Yasunari Umemoto, Kaoru IDENO, Shigeki Koya | 2023-04-18 |
| 11626511 | Semiconductor device | Yasunari Umemoto, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2023-04-11 |
| 11621678 | Semiconductor device and power amplifier module | Yasunari Umemoto, Masahiro Shibata, Kenichi Nagura | 2023-04-04 |
| 11557664 | Heterojunction bipolar transistor including ballast resistor and semiconductor device | Yasunari Umemoto, Takayuki Tsutsui, Satoshi Tanaka | 2023-01-17 |
| 11476807 | Power amplifier module | Shigeki Koya, Takayuki Tsutsui, Yasunari Umemoto, Satoshi Tanaka | 2022-10-18 |
| 11424350 | Heterojunction bipolar transistor | Yasunari Umemoto, Shigeki Koya | 2022-08-23 |
| 11329146 | Semiconductor device | Yasunari Umemoto, Kaoru IDENO, Shigeki Koya | 2022-05-10 |
| 11322462 | Semiconductor device | Takayuki Tsutsui | 2022-05-03 |
| 11309852 | Power amplifier and compound semiconductor device | Satoshi Tanaka, Takayuki Tsutsui, Yasunari Umemoto | 2022-04-19 |
| 11289434 | Semiconductor element and power amplification device | Shigeki Koya, Yasunari Umemoto, Masao Kondo, Yuichi Saito, Takayuki Tsutsui | 2022-03-29 |
| 11276689 | Semiconductor device and amplifier module | Kenji Sasaki, Masao Kondo, Shigeki Koya, Shinnosuke Takahashi, Yasunari Umemoto +1 more | 2022-03-15 |
| 11227862 | Semiconductor device | Kenji Sasaki, Takayuki Tsutsui, Yasuhisa Yamamoto | 2022-01-18 |
| 11227804 | Semiconductor device | Yasunari Umemoto, Shigeki Koya, Kaoru IDENO | 2022-01-18 |
| 11196394 | Power amplifier module | Shigeki Koya, Yasunari Umemoto, Yuichi Saito, Takayuki Tsutsui | 2021-12-07 |
| 11164963 | Bipolar transistor and radio-frequency power amplifier module | Yasunari Umemoto, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2021-11-02 |
| 11107909 | Semiconductor device | Yasunari Umemoto, Kaoru IDENO, Shigeki Koya | 2021-08-31 |
| 11075289 | Heterojunction bipolar transistor including ballast resistor and semiconductor device | Yasunari Umemoto, Takayuki Tsutsui, Satoshi Tanaka | 2021-07-27 |
| 10972060 | Radio frequency power amplifier and power amplifier module | Kenji Sasaki, Takayuki Tsutsui | 2021-04-06 |