Issued Patents All Time
Showing 25 most recent of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8675323 | Method of manufacturing a package | — | 2014-03-18 |
| 8547080 | Voltage regulator | — | 2013-10-01 |
| 8513927 | Power generation circuit for generating and storing electric power utilizing radio wave energy | Makoto Ishida, Kazuaki Sawada, Hidekuni Takao | 2013-08-20 |
| 7956593 | Power generation circuit using electromagnetic wave | Makoto Ishida, Kazuaki Sawada, Hidekuni Takao | 2011-06-07 |
| 7855429 | Electronic circuit device having silicon substrate | Makoto Ishida, Kazuaki Sawada, Hidekuni Takao | 2010-12-21 |
| 7594435 | Humidity sensor and semiconductor device including the same | — | 2009-09-29 |
| 7424097 | Method of measuring and improving xDSL transmission characteristic | Toshiya Shimura | 2008-09-09 |
| 7225675 | Capacitance type dynamic quantity sensor | Kenji Kato, Mitsuo Yarita | 2007-06-05 |
| 7095212 | Battery pack with a remaining battery power calculating function | Takashi Niwa, Norio Chiba, Susumu Ichihara | 2006-08-22 |
| 6980181 | LED drive circuit | — | 2005-12-27 |
| 6801033 | Voltage converter having switching element with variable substrate potential | Jun Osanai | 2004-10-05 |
| 6586958 | Voltage converter having switching element with variable substrate potential | Jun Osanai | 2003-07-01 |
| 6300751 | Switching regulator control circuit avoiding break-down of the switching element | — | 2001-10-09 |
| 6281668 | Switching regulator control circuit of PFM system and switching regulator thereof | — | 2001-08-28 |
| 6275014 | Switching regulator circuit capable of eliminating power supply recharging operation by reverse coil current | — | 2001-08-14 |
| 6242890 | Charge/discharge control circuit and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2001-06-05 |
| 6208123 | Voltage regulator with clamp circuit | — | 2001-03-27 |
| 6181108 | Overcharge/overdischarge detecting circuit having current detecting means with latch function and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2001-01-30 |
| 6127808 | Overcharge/overdischarge detecting circuit having a reset means and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2000-10-03 |
| 6100675 | Switching regulator capable of increasing regulator efficiency under light load | — | 2000-08-08 |
| 6097177 | Charge/discharge control circuit and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2000-08-01 |
| 6087807 | Charge/discharge control circuit and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2000-07-11 |
| 6078170 | Switching regulator control circuit of PWM system and switching regulator thereof | — | 2000-06-20 |
| 6054841 | Charge/discharge control circuit and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 2000-04-25 |
| 5998974 | Charge/discharge control circuit and chargeable electric power source apparatus | Takayuki Takashina, Yoshikazu Kojima, Sadashi Shimoda, Hiroshi Mukainakano | 1999-12-07 |