Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371389 | Heterojunction bipolar transistor with base layer having graded bandgap | Atsushi Nakagawa, Takashi Hirose, Kaoru Inoue | 1994-12-06 |
| 5289020 | Heterojunction bipolar transistor | Takashi Hirose, Kaoru Inoue | 1994-02-22 |