Issued Patents All Time
Showing 1–25 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12341476 | Power amplifier circuit | Masao Kondo, Shaojun MA, Shinnosuke Takahashi | 2025-06-24 |
| 12262556 | Power amplifier | Shaojun MA, Shigeki Koya, Masayuki Aoike, Shinnosuke Takahashi, Masatoshi Hase | 2025-03-25 |
| 12040323 | Semiconductor device | Shaojun MA, Shigeki Koya, Kenji Sasaki | 2024-07-16 |
| 11990873 | Radio-frequency power-amplifying element | Shaojun MA, Shigeki Koya | 2024-05-21 |
| 11978786 | Bipolar transistor and radio-frequency power amplifier module | Isao Obu, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2024-05-07 |
| 11949003 | Semiconductor device | Isao Obu, Kaoru IDENO, Shigeki Koya | 2024-04-02 |
| 11894365 | Power amplifying device | Shaojun MA, Kenji Sasaki | 2024-02-06 |
| 11830917 | Unit cell and power amplifier module | Shaojun MA, Shigeki Koya | 2023-11-28 |
| 11817356 | Semiconductor device | Shigeki Koya, Isao Obu, Kaoru IDENO | 2023-11-14 |
| 11784245 | Semiconductor device | Kenji Sasaki, Shigeki Koya, Shinnosuke Takahashi, Masao Kondo | 2023-10-10 |
| 11705509 | Heterojunction bipolar transistor | Shigeki Koya, Isao Obu | 2023-07-18 |
| 11705875 | Power amplifier module | Shigeki Koya, Yuichi Saito, Isao Obu, Takayuki Tsutsui | 2023-07-18 |
| 11658180 | 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 | 2023-05-23 |
| 11631758 | Semiconductor device | Isao Obu, Kaoru IDENO, Shigeki Koya | 2023-04-18 |
| 11626511 | Semiconductor device | Isao Obu, Masahiro Shibata, Shigeki Koya, Masao Kondo, Takayuki Tsutsui | 2023-04-11 |
| 11621678 | Semiconductor device and power amplifier module | Isao Obu, Masahiro Shibata, Kenichi Nagura | 2023-04-04 |
| 11557664 | Heterojunction bipolar transistor including ballast resistor and semiconductor device | Isao Obu, Takayuki Tsutsui, Satoshi Tanaka | 2023-01-17 |
| 11532736 | Semiconductor device | Daisuke Tokuda, Tsunekazu Saimei, Hiroaki Tokuya | 2022-12-20 |
| 11508835 | Bipolar transistor and method for producing the same | Shigeki Koya, Atsushi Kurokawa | 2022-11-22 |
| 11476807 | Power amplifier module | Shigeki Koya, Takayuki Tsutsui, Isao Obu, Satoshi Tanaka | 2022-10-18 |
| 11424350 | Heterojunction bipolar transistor | Shigeki Koya, Isao Obu | 2022-08-23 |
| 11329146 | Semiconductor device | Isao Obu, Kaoru IDENO, Shigeki Koya | 2022-05-10 |
| 11309852 | Power amplifier and compound semiconductor device | Isao Obu, Satoshi Tanaka, Takayuki Tsutsui | 2022-04-19 |
| 11289434 | Semiconductor element and power amplification device | Shigeki Koya, Isao Obu, Masao Kondo, Yuichi Saito, Takayuki Tsutsui | 2022-03-29 |
| 11276689 | Semiconductor device and amplifier module | Kenji Sasaki, Masao Kondo, Shigeki Koya, Shinnosuke Takahashi, Isao Obu +1 more | 2022-03-15 |