Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7554394 | Power amplifier circuit | — | 2009-06-30 |
| 7417507 | Bias circuit for power amplifier having a low degradation in distortion characteristics | Kazuya Yamamoto, Tomoyuki Asada, Hiroyuki Otsuka | 2008-08-26 |
| 6946913 | High frequency amplifier circuit | Takao Moriwaki, Yuji Yamamoto | 2005-09-20 |
| 6308047 | Radio-frequency integrated circuit for a radio-frequency wireless transmitter-receiver with reduced influence by radio-frequency power leakage | Kazuya Yamamoto | 2001-10-23 |
| 5878331 | Integrated circuit | Kazuya Yamamoto | 1999-03-02 |
| 5699018 | Negative voltage generator | Kazuya Yamamoto | 1997-12-16 |
| 5548825 | Radio transmitter with active band-pass filtering | Kazuya Yamamoto | 1996-08-20 |
| 5084907 | Two-modulus variable frequency-divider circuit | — | 1992-01-28 |