Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11206028 | Voltage-controlled oscillator and PLL circuit in which same is used | Yoji Bando | 2021-12-21 |
| 8564362 | Filter circuit, semiconductor integrated circuit, communication apparatus, semiconductor device, and system | Michiko Tokumaru, Kouji Okamoto | 2013-10-22 |
| 8476973 | Switch device and layout design method for switch device | — | 2013-07-02 |
| 8395442 | Filter circuit, transmission filter circuit, semiconductor integrated circuit, communication apparatus, and timing adjustment method for filter circuit | Michiko Tokumaru, Kouji Okamoto | 2013-03-12 |
| 8217817 | Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same | Tomohiro Ogawa | 2012-07-10 |
| 8081099 | D/A converter, differential switch, semiconductor integrated circuit, video apparatus, and communication apparatus | Junji Nakatsuka | 2011-12-20 |
| 7982644 | D/A converter and semiconductor integrated circuit including the same | — | 2011-07-19 |
| 7973687 | Differential switch, D/A converter, semiconductor integrated circuit and communication apparatus | — | 2011-07-05 |
| 7924188 | Rapid recovery circuit | Michiko Tokumaru | 2011-04-12 |
| 7924199 | Current steering DAC | Michiko Tokumaru | 2011-04-12 |
| 7825843 | D/A converter and semiconductor integrated circuit including the same | — | 2010-11-02 |
| 7796073 | Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same | Tomohiro Ogawa | 2010-09-14 |
| 7764211 | Current steering DAC | Michiko Tokumaru | 2010-07-27 |
| 7701373 | Current steering DAC | Michiko Tokumaru | 2010-04-20 |
| 7042278 | Voltage reference circuit with reduced power consumption | Yoshitsugu Inagaki, Koji Oka | 2006-05-09 |
| 7019676 | D/A converter | Koji Oka | 2006-03-28 |
| 6791391 | Level shifting circuit | Hidetoshi Nishimura, Masahiro Gion, Naoki Nojiri | 2004-09-14 |
| 6734817 | A/D converter, method of A/D conversion, and signal processing device | Junichi Naka, Yoshitsugu Inagaki, Hiroshi Sakura, Koji Oka, Youichi Okamoto +1 more | 2004-05-11 |
| 6590516 | Current steering type D/A converter | Yoshitsugu Inagaki | 2003-07-08 |
| 6492849 | Supply voltage detection circuit | Yoshitsugu Inagaki, Koji Oka | 2002-12-10 |
| 6479930 | Dispersion-type electroluminescence element | Koji Tanabe, Naohiro Nishioka, Yosuke Chikahisa | 2002-11-12 |
| 6310492 | CMOS semiconductor integrated circuit | Yoshitsugu Inagaki, Hiroyuki Konishi, Koji Oka, Akira Matsuzawa | 2001-10-30 |
| 6010742 | Electroluminescent lighting element, manufacturing method of the same, and an illuminated switch unit using the same | Koji Tanabe, Yosuke Chikahisa | 2000-01-04 |
| 5844362 | Electroluminescent light element having a transparent electrode formed by a paste material which provides uniform illumination | Koji Tanabe, Yosuke Chikahisa, Masahiro Ohara, Masaru Kuwahara | 1998-12-01 |
| 5841230 | Electroluminescent lighting element with a light-permeable reflection layer and manufacturing method for the same | Koji Tanabe, Yosuke Chikahisa | 1998-11-24 |