Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6856709 | Optical modulation device | Kouichi Uesaka, Takashi Suga, Hisaaki Kanai | 2005-02-15 |
| 6091305 | PLL frequency synthesizer | Yuji Ishida, Ken Takei | 2000-07-18 |
| 5977838 | High-speed phase-locked loop circuit | Yuji Ishida, Ken Takei | 1999-11-02 |
| 5963099 | PLL frequency synthesizer | Yuji Ishida, Ken Takei | 1999-10-05 |
| 5854971 | Output-controlled power amplifier, radio communication terminal and radio communication base station | Takashi Sakai, Yuji Ishida, Ken Takei | 1998-12-29 |
| 4187479 | Variable equalizer | Kohei Ishizuka, Yoshitaka Takasaki, Yasuhiro Kita, Takeo Kusama | 1980-02-05 |