Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990300 | D/A conversion circuit | — | 2011-08-02 |
| 6611043 | Bipolar transistor and semiconductor device having the same | — | 2003-08-26 |
| 6511889 | Reference voltage supply circuit having reduced dispersion of an output voltage | — | 2003-01-28 |
| 6313515 | Reference voltage supply circuit | — | 2001-11-06 |
| 5986463 | Differential signal generating circuit having current spike suppressing circuit | — | 1999-11-16 |
| 5696512 | Digital/analog (D/A) converting device with unit current generating circuit having differential switching and reference voltage generating circuits | — | 1997-12-09 |
| 5691579 | Current switching circuit operable at high speed without externally supplied reference bias | — | 1997-11-25 |
| 5198814 | Digital-to-analog converter with conversion error compensation | Takeshi Ogawara | 1993-03-30 |