Inventor · disambiguated record
Tamiji Nagai
Also filed as: NAGAI TAMIJI · YOSHIDA SUSUMU
40 granted patents·4 pending applications·1,288 citations·filing 1975–2007
98Inventor score
Top patents by PatentIndex Score
44 records- 0195US4242714ACurrent control circuitSONY CORP·Filed 1979·Granted Dec 30, 1980·44 cites·9 claims
- 0291US5691620ABattery charging methodSONY CORP·Filed 1996·Granted Nov 25, 1997·118 cites·25 claims
- 0390US7193390B2Apparatus for connecting secondary battery cells in series and method for controlling secondary battery cells connected in seriesSONY CORP·Filed 2003·Granted Mar 20, 2007·41 cites·7 claims
- 0490US4206388ACurrent control circuit for horizontal deflection coil of television receiverSONY CORP·Filed 1978·Granted Jun 3, 1980·46 cites·23 claims
- 0588US5991170AEquipment and method for transmitting electric powerSONY CORP·Filed 1998·Granted Nov 23, 1999·134 cites·14 claims
- 0687US5680027ABattery pack including internal capacity monitor for monitoring groups of battery cellsSONY CORP·Filed 1993·Granted Oct 21, 1997·85 cites·18 claims
- 0785US6124700ACharging method, charging equipment, and integrated circuitSONY CORP·Filed 1996·Granted Sep 26, 2000·112 cites·65 claims
- 0884US8610405B2Charge and discharge circuit of secondary battery and battery packYAMAZAKI KAZUO·Filed 2007·Granted Dec 17, 2013·21 cites·6 claims
- 0984US7023180B2Charging apparatus and method for a secondary battery of a portably electronic deviceSONY CORP·Filed 2005·Granted Apr 4, 2006·18 cites·1 claims
- 1083US5783322ASecondary battery packSONY CORP·Filed 1996·Granted Jul 21, 1998·73 cites·26 claims
- 1181US6326768B2Method, apparatus and battery pack for charging and discharging secondary batteriesSONY CORP·Filed 2000·Granted Dec 4, 2001·49 cites·4 claims
- 1280US6057609AAuxiliary power supply apparatusSONY CORP·Filed 1998·Granted May 2, 2000·63 cites·5 claims
- 1379US8098056B2Bidirectional converter and electronic deviceYAMAZAKI KAZUO·Filed 2007·Granted Jan 17, 2012·18 cites·14 claims
- 1476US6956357B2Charging apparatus and charging methodSONY CORP·Filed 2005·Granted Oct 18, 2005·10 cites·1 claims
- 1574US5760570ARechargeable battery apparatusSONY CORP·Filed 1996·Granted Jun 2, 1998·63 cites·20 claims
- 1669US6118255ACharging apparatus, secondary battery apparatus, charging system, and charging methodSONY CORP·Filed 1998·Granted Sep 12, 2000·52 cites·7 claims
- 1769US5796238ABattery packSONY CORP·Filed 1993·Granted Aug 18, 1998·48 cites·48 claims
- 1868US6291965B1Battery chargerSONY CORP·Filed 2000·Granted Sep 18, 2001·23 cites·10 claims
- 1968US6028415ACharging control method and charging control deviceSONY CORP·Filed 1998·Granted Feb 22, 2000·52 cites·7 claims
- 2068US4027200AHigh voltage generating circuitSONY CORP·Filed 1975·Granted May 31, 1977·14 cites·8 claims
- 2165US6465913B1Power source unitSONY CORP·Filed 2000·Granted Oct 15, 2002·22 cites·3 claims
- 2264US7436644B2Switching circuit, switching method, protective device and battery packSONY CORP·Filed 2003·Granted Oct 14, 2008·11 cites·19 claims
- 2363US6949913B2Charging apparatus and charging methodSONY CORP·Filed 2005·Granted Sep 27, 2005·4 cites·1 claims
- 2461US6961255B2Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a loadSONY CORP·Filed 2005·Granted Nov 1, 2005·4 cites·1 claims
- 2560US7830675B2Switching power supply device and method of starting the sameMITSUMI ELECTRIC CO LTD·Filed 2006·Granted Nov 9, 2010·5 cites·9 claims
- 2660US5982151ABattery charger and battery charging methodSONY CORP·Filed 1998·Granted Nov 9, 1999·37 cites·19 claims
- 2755US7023179B2Charging apparatus and charging methodSONY CORP·Filed 2003·Granted Apr 4, 2006·7 cites·15 claims
- 2853US6552562B2Current detecting apparatus and its control methodSONY CORP·Filed 2001·Granted Apr 22, 2003·8 cites·7 claims
- 2953US6373724B2Power supply apparatusSONY CORP·Filed 2001·Granted Apr 16, 2002·10 cites·9 claims
- 3053US5982153ACharger system switchably connects a smoothing capacitor and resistor and charging controller based on a detected secondary battery voltageSONY CORP·Filed 1998·Granted Nov 9, 1999·29 cites·8 claims
- 3151US6066939ASecondary battery packSONY CORP·Filed 1998·Granted May 23, 2000·26 cites·14 claims
- 3249US6169341B1Power supplying adapter, electronic equipment, and signal transmission systemSONY CORP·Filed 1999·Granted Jan 2, 2001·23 cites·15 claims
- 3346US4393337ASwitching circuitSONY CORP·Filed 1979·Granted Jul 12, 1983·6 cites·10 claims
- 3444US7202633B2Driving circuit for field effect transistorSONY CORP·Filed 2004·Granted Apr 10, 2007·2 cites·2 claims
- 3544US6452820B2Power supplying apparatus and method having a primary side insulated from a secondary sideSONY CORP·Filed 2001·Granted Sep 17, 2002·5 cites·11 claims
- 3643US2010188051A1Secondary battery charging circuitMITSUMI ELECTRIC CO LTD·Filed 2007·Application pending·0 cites
- 3743US2011248670A1Charging power source apparatusYAMAZAKI KAZUO·Filed 2007·Application pending·0 cites
- 3843US2010127676A1Power source apparatusMITSUMI ELECTRIC CO LTD·Filed 2007·Application pending·0 cites
- 3941US6462972B2Power source apparatus for providing a power source in a standby mode and a pulse generating apparatusSONY CORP·Filed 2001·Granted Oct 8, 2002·3 cites·12 claims
- 4040US6956754B2Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a loadSONY CORP·Filed 2005·Granted Oct 18, 2005·0 cites·2 claims
- 4138US6917530B2Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and or current to a loadSONY CORP·Filed 2002·Granted Jul 12, 2005·1 cites·10 claims
- 4238US2010308778A1Electronic system, electronic device and power supply deviceYAMAZAKI KAZUO·Filed 2007·Application pending·0 cites
- 4335US6650090B2Battery pack and signal transmission systemSONY CORP·Filed 2001·Granted Nov 18, 2003·0 cites·5 claims
- 4431US4390818ATelevision receiverSONY CORP·Filed 1981·Granted Jun 28, 1983·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →