Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7573336 | Power amplifier and multistage amplification circuit including same | Motoko Furukawa | 2009-08-11 |
| 6611008 | Heterojunction bipolar transistor capable of restraining the conductivity modulation of the ballast layer | John Twynam | 2003-08-26 |
| 6593604 | Heterojunction bipolar transistor, manufacturing method therefor, and communication device therewith | — | 2003-07-15 |
| 6239608 | Method for analyzing schottky junction method for evaluating semiconductor wafer method for evaluating insulating film and schottky junction analyzing apparatus | Yu Zhu, Masafumi Shimizu | 2001-05-29 |
| 5942909 | Method for analyzing Schottky junction, method for evaluating semiconductor wafer, method for evaluating insulating film, and Schottky junction analyzing apparatus | Yu Zhu, Masafumi Shimizu | 1999-08-24 |
| 5912480 | Heterojunction semiconductor device | Yu Zhu, Naoki Takahashi, Masafumi Shimizu | 1999-06-15 |
| 5876901 | Method for fabricating semiconductor device | — | 1999-03-02 |