Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7605615 | Voltage comparator circuit | — | 2009-10-20 |
| 7250861 | Crime-prevention lighting device | Tadashi Sugimoto, Hiroyuki Tomooka, Hisato Takemura, Akihiko Hayashi | 2007-07-31 |
| 7129882 | Successive approximation ad converter having pulse noise suppression | — | 2006-10-31 |
| 7080106 | Random number generating method and random number generating device | Jun Ikeda | 2006-07-18 |
| 6581016 | Apparatus for accurately measuring impedance and method used therein | — | 2003-06-17 |
| 6208208 | Operationally amplifying method and operational amplifier | Yuji Komatsu, Yasuhiro Taguchi | 2001-03-27 |
| 6144232 | Chopper type voltage comparing circuit capable of correctly determining output polarity, and voltage comparing method | Toshio Ohkido | 2000-11-07 |
| 6104179 | Low-power consumption noise-free voltage regulator | — | 2000-08-15 |
| 5959469 | Chopper comparator showing high speed and low power operations free of malfunction under variation of logical threshold voltage of invertor | Akira Kurauchi | 1999-09-28 |
| 5559356 | Semiconductor device with large substrate contact region | — | 1996-09-24 |
| 5544081 | Output filter for oversampling digital-to-analog converter | — | 1996-08-06 |
| 5455783 | Subsampling filter comprising two filters in succession | — | 1995-10-03 |
| 5321370 | Operational amplifier with common-mode feedback amplifier circuit | — | 1994-06-14 |
| 5206648 | Oversampling DA converter with operational amplifier driven by a single reference voltage | — | 1993-04-27 |
| 5136181 | Power-on-reset circuit | — | 1992-08-04 |
| 5010347 | Analog-to-digital converter having an excellent signal-to-noise ratio for small signals | — | 1991-04-23 |
| 4963834 | Operational amplifier | — | 1990-10-16 |
| 4766394 | Operational amplifier circuit having wide operating range | — | 1988-08-23 |
| 4764753 | Analog to digital converter | — | 1988-08-16 |
| 4661802 | Digital-to-analog converter | — | 1987-04-28 |
| 4602167 | Voltage comparator circuit | — | 1986-07-22 |
| 4511810 | Voltage comparator circuit | — | 1985-04-16 |