Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611008 | Heterojunction bipolar transistor capable of restraining the conductivity modulation of the ballast layer | Yoshiteru Ishimaru | 2003-08-26 |
| 6566694 | Heterojunction bipolar transferred electron tetrode | — | 2003-05-20 |