Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8581657 | Voltage divider, constant voltage circuit using same, and trimming method in the voltage divider circuit | — | 2013-11-12 |
| 7989935 | Semiconductor device | — | 2011-08-02 |
| 7903427 | Semiconductor device structure and semiconductor device incorporating same | Kazuhiro Kawamoto | 2011-03-08 |
| 7667442 | Constant voltage power supply circuit and method of testing the same | — | 2010-02-23 |
| 7548044 | Constant-voltage power circuit with fold back current limiting capability | Shunsei Tanaka | 2009-06-16 |
| 7531994 | Constant voltage regulator for generating a low voltage output | — | 2009-05-12 |
| 7502239 | Charge pump circuit and power supply circuit | — | 2009-03-10 |
| 7480125 | Constant voltage circuit, system power device and method of controlling system power device | — | 2009-01-20 |
| 7385378 | Constant-voltage circuit, semiconductor device using the same, and constant-voltage outputting method providing a predetermined output voltage | — | 2008-06-10 |
| 7368900 | Constant voltage circuit and constant current source, amplifier, and power supply circuit using the same | — | 2008-05-06 |
| 7358709 | Constant voltage regulator for generating a low voltage output | — | 2008-04-15 |
| 7348834 | Selecting a reference voltage suitable to load functionality | — | 2008-03-25 |
| 7274180 | Constant voltage outputting method and apparatus capable of changing output voltage rise time | — | 2007-09-25 |
| 7268523 | Constant voltage power supply circuit and method of testing the same | — | 2007-09-11 |
| 7233508 | Charge pump circuit and power supply circuit | — | 2007-06-19 |
| 7202655 | Constant voltage circuit and constant current source, amplifier, and power supply circuit using the same | — | 2007-04-10 |
| 7196504 | Constant-voltage circuit, semiconductor device using the same, and constant-voltage outputting method | — | 2007-03-27 |
| 7183755 | Constant-voltage power circuit with fold back current limiting capability | Shunsei Tanaka | 2007-02-27 |
| 7176753 | Method and apparatus for outputting constant voltage | Ippei Noda | 2007-02-13 |
| 7053751 | Resistance hybrid, and voltage detection and constant voltage generating circuits incorporating such resistance hybrid | — | 2006-05-30 |
| 7050315 | Charge pump circuit and power supply circuit | — | 2006-05-23 |
| 7030686 | Constant voltage circuit with phase compensation | — | 2006-04-18 |
| 6853566 | Charge pump circuit and power supply circuit | — | 2005-02-08 |