Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11353837 | Communication device | Hiroyuki Sato | 2022-06-07 |
| 11340674 | Power supply apparatus and communication apparatus | Hong Gao | 2022-05-24 |
| 10838382 | Power supply control device | Hiroyuki Sato | 2020-11-17 |
| 10587145 | Charging circuit and electronic device | Hong Gao | 2020-03-10 |
| 10488904 | Power supply controller and energy harvesting apparatus | Hiroyuki Sato | 2019-11-26 |
| 10389109 | Overvoltage protection circuit and overvoltage protection control method | Hong Gao | 2019-08-20 |
| 10340847 | Power supply control circuit, energy harvesting device, and control method of energy harvesting device | — | 2019-07-02 |
| 9921595 | Circuit for generating stepped-down voltage | — | 2018-03-20 |
| 9729051 | Power control circuit, environmental power generation device, and control method of environmental power generation device | Hong Gao | 2017-08-08 |
| 9577624 | Signal conversion circuit and power supply apparatus | Hong Gao | 2017-02-21 |
| 9270265 | Power on reset circuit, power supply circuit, and power supply system | Kazuaki Oishi, Tomokazu Kojima | 2016-02-23 |
| 9240753 | Oscillator and power management apparatus | Hong Gao, Masafumi Kondou | 2016-01-19 |
| 9083240 | DC-DC converter and portable device | — | 2015-07-14 |
| 9000810 | Quantizer, comparator circuit, and semiconductor integrated circuit | Hideta Oki | 2015-04-07 |
| 8971077 | Power supply circuit, mobile terminals using the same, and control method of the same | — | 2015-03-03 |
| 8941437 | Bias circuit | — | 2015-01-27 |
| 8896158 | Variable capacitance circuit | — | 2014-11-25 |
| 8604837 | Detector circuit | — | 2013-12-10 |
| 8604836 | Detector circuit | — | 2013-12-10 |
| 8378755 | Oscillation circuit | Hiroyuki Ito | 2013-02-19 |
| 8289197 | System having correction unit and correcting method thereof | — | 2012-10-16 |
| 8164632 | Method and apparatus for measuring moving picture response curve | Yoshi Enami, Yoshihisa Furukawa, Tsutomu Mizuguchi | 2012-04-24 |
| 8049651 | ΔΣ modulation circuit and system | — | 2011-11-01 |
| 8014747 | Amplitude detecting device | — | 2011-09-06 |
| 7456774 | Encoder circuit and A/D conversion circuit | Kunihiko Gotoh | 2008-11-25 |