Inventor · disambiguated record
Ryutaro Arakawa
Also filed as: ARAKAWA RYUTARO
8 granted patents·281 citations·filing 1988–2007
89Inventor score
Top patents by PatentIndex Score
8 records- 0196US7348766B2Switching power supply deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Granted Mar 25, 2008·34 cites·28 claims
- 0293US7115888B2LED driving semiconductor circuit and LED driving apparatus including the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Oct 3, 2006·36 cites·15 claims
- 0387US7638954B2Light emitting diode drive apparatusPANASONIC CORP·Filed 2007·Granted Dec 29, 2009·16 cites·21 claims
- 0485US7834828B2Led driving semiconductor apparatus provided with controller including regulator and drain current detector of switching element blockPANASONIC CORP·Filed 2006·Granted Nov 16, 2010·13 cites·19 claims
- 0585US4962415AIC cardHITACHI MAXELL·Filed 1990·Granted Oct 9, 1990·114 cites·18 claims
- 0675US5061990ASemiconductor device and the manufacture thereofHITACHI MAXELL·Filed 1988·Granted Oct 29, 1991·50 cites·8 claims
- 0754US7508254B2Reference supply voltage circuit using more than two reference supply voltagesPANASONIC CORP·Filed 2007·Granted Mar 24, 2009·3 cites·10 claims
- 0846US6021058APWM inverter with zero dead time and initial power supply capacitor chargingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 1, 2000·15 cites·31 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →