Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12369345 | Compound semiconductor device, amplifier, and method for manufacturing compound semiconductor device | Junji Kotani, Toshihiro Ohki, Naoya Okamoto | 2025-07-22 |
| 12193151 | High-frequency circuit board and antenna module | Naoya Okamoto, Yoshihiro Nakata, Yusuke Kumazaki, Toshihiro Ohki, Naoki Hara | 2025-01-07 |
| 11688663 | Semiconductor device, semiconductor device fabrication method, and electronic device | Toshihiro Ohki, Kozo Makiyama, Junya Yaita | 2023-06-27 |
| 11646366 | Semiconductor device | Kozo Makiyama, Atsushi Yamada, Junji Kotani | 2023-05-09 |
| 11387357 | Compound semiconductor device, method for manufacturing the same and amplifier | Toshihiro Ohki | 2022-07-12 |
| 11088044 | Compound semiconductor device and fabrication method therefor, and amplifier | Toshihiro Ohki | 2021-08-10 |
| 10964805 | Compound semiconductor device | Kozo Makiyama, Yuichi Minoura, Yusuke Kumazaki, Toshihiro Ohki, Naoya Okamoto | 2021-03-30 |
| 10796917 | Method for manufacturing gate insulator for HEMT | Kozo Makiyama, Naoya Okamoto | 2020-10-06 |
| 10680073 | Semiconductor device and manufacturing method thereof | Naoya Okamoto | 2020-06-09 |
| 10508343 | Etching method for manufacturing semiconductor device | — | 2019-12-17 |
| 10468514 | Semiconductor device and method for producing the same, power supply device, and high-frequency amplifier | Naoya Okamoto | 2019-11-05 |
| 10312094 | AlOx/InOx gate insulator for HEMT | Kozo Makiyama, Naoya Okamoto | 2019-06-04 |
| 10312344 | Semiconductor device, manufacturing method of semiconductor device, power unit, and amplifier | — | 2019-06-04 |
| 10276703 | Compound semiconductor device and method of manufacturing the same | Youichi KAMADA | 2019-04-30 |
| 10276671 | Semiconductor device, method for manufacturing semiconductor device, and electronic device | — | 2019-04-30 |
| 10192964 | Compound semiconductor device and method of manufacturing the same | Youichi KAMADA | 2019-01-29 |
| 10084059 | Semiconductor device and manufacturing method of semiconductor device | Naoya Okamoto | 2018-09-25 |
| 10056460 | Semiconductor device and manufacturing method thereof | Naoya Okamoto | 2018-08-21 |
| 10043897 | Semiconductor device and method of fabricating semiconductor device | — | 2018-08-07 |
| 10043727 | Compound semiconductor device and method of manufacturing the same | Naoya Okamoto | 2018-08-07 |
| 10002942 | Semiconductor device and method of manufacturing semiconductor device | Kozo Makiyama | 2018-06-19 |
| 9966463 | Semiconductor device and method for producing same having multilayer wiring structure with contact hole having hydrophobic film formed on side surface of the contact hole | Naoya Okamoto | 2018-05-08 |
| 9941401 | Semiconductor device, power supply apparatus and high-frequency amplifier | Kozo Makiyama, Naoya Okamoto | 2018-04-10 |
| 9779933 | Semiconductor device and method of manufacturing semiconductor device | Kozo Makiyama | 2017-10-03 |
| 9755061 | Semiconductor device and method for producing the same, power supply device, and high-frequency amplifier | Naoya Okamoto | 2017-09-05 |