Issued Patents All Time
Showing 101–125 of 143 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7009448 | Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit | Takafumi Yamaji | 2006-03-07 |
| 6977541 | Variable time constant circuit and filter circuit using the same | Daisuke Kurose, Rui Ito | 2005-12-20 |
| 6975171 | Balanced amplifier and filter using the same | Takeshi Ueno, Zdzislaw Czarnul | 2005-12-13 |
| 6954089 | Frequency converter having low supply voltage | Toshiyuki Umeda, Shoji Otaka | 2005-10-11 |
| 6930532 | Exponential conversion circuit and variable gain circuit | Nobuo Kanou, Takafumi Yamaji | 2005-08-16 |
| 6919768 | Balanced amplifier and filter using the same | Zdzislaw Czarnul, Takeshi Ueno | 2005-07-19 |
| 6909323 | Variable gain amplifier | Takashi Ueno, Tadashi Arai | 2005-06-21 |
| 6876256 | Balanced amplifier and filter using the same | Zdzislaw Czarnul, Takeshi Ueno | 2005-04-05 |
| 6806860 | Liquid crystal driving circuit and load driving circuit | Tetsuya Saito, Hironori Minamizaki | 2004-10-19 |
| 6781464 | Balanced amplifier and filter using the same | Takeshi Ueno, Zdzislaw Czarnul | 2004-08-24 |
| 6777999 | Exponential conversion circuit and variable gain circuit | Nobuo Kanou, Takafumi Yamaji | 2004-08-17 |
| 6690232 | Variable gain amplifier | Takashi Ueno, Tadashi Arai | 2004-02-10 |
| 6664941 | Amplifier circuit and liquid-crystal display unit using the same | Takeshi Shima | 2003-12-16 |
| 6577188 | Variable gain amplifier | Takashi Ueno, Tadashi Arai, Takafumi Yamaji, Hiroshi Yoshida | 2003-06-10 |
| 6549196 | D/A conversion circuit and liquid crystal display device | Takashi Taguchi, Takeshi Shima | 2003-04-15 |
| 6498929 | Receiver having DC offset decreasing function and communication system using the same | Hiroshi Tsurumi, Hiroshi Yoshida, Takafumi Yamaji, Akira Yasuda, Takashi Ueno +3 more | 2002-12-24 |
| 6480178 | Amplifier circuit and liquid-crystal display unit using the same | Takeshi Shima | 2002-11-12 |
| 6456270 | Integrated circuit device and liquid crystal display apparatus using the same | — | 2002-09-24 |
| 6437643 | Variable gain amplifier | Takashi Ueno, Tadashi Arai, Takafumi Yamaji, Hiroshi Yoshida | 2002-08-20 |
| 6411162 | Amplifier device and LCD device | Hironori Minamizaki, Tetsuya Saito | 2002-06-25 |
| 6381449 | Frequency converter | Takafumi Yamaji, Hiroshi Tanimoto | 2002-04-30 |
| 6346804 | Impedance conversion circuit | Takashi Ueno, Hiroshi Tanimoto | 2002-02-12 |
| 6191779 | Liquid crystal display device, device for controlling drive of liquid crystal display device and D/A converting semiconductor device | Takashi Taguchi | 2001-02-20 |
| 6045208 | Ink-jet recording device having an ultrasonic generating element array | Shuzo Hirahara, Tutomu Saito, Hitoshi Nagato, Satoshi Takayama, Hideki Nukada +13 more | 2000-04-04 |
| 5995819 | Frequency converter and radio receiver using same | Takafumi Yamaji, Osamu Watanabe, Hiroshi Tanimoto, Shoji Otaka, Ryuichi Fujimoto | 1999-11-30 |