Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |