Inventor · disambiguated record
Ryouhei Saga
Also filed as: SAGA RYOUHEI
9 granted patents·3 pending applications·362 citations·filing 2000–2004
92Inventor score
Top patents by PatentIndex Score
12 records- 0189US6489756B2DC-DC converter with switchable control modeHITACHI LTD·Filed 2001·Granted Dec 3, 2002·63 cites·14 claims
- 0288US6580597B2Voltage regulator module for micro processor and CPO using a super capacitorHITACHI LTD·Filed 2002·Granted Jun 17, 2003·48 cites·12 claims
- 0387US6381152B1Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching deviceHITACHI LTD·Filed 2000·Granted Apr 30, 2002·32 cites·17 claims
- 0485US6567261B2DC-DC step-down converter with super capacitorHITACHI LTD·Filed 2002·Granted May 20, 2003·37 cites·6 claims
- 0584US7157810B2Backup power supplyHITACHI COMP PERIPHERALS CO·Filed 2004·Granted Jan 2, 2007·47 cites·15 claims
- 0683US6977448B2Backup power supplyHITACHI COMP PERIPHERALS CO·Filed 2003·Granted Dec 20, 2005·46 cites·11 claims
- 0783US6507507B2DC power supply deviceHITACHI LTD·Filed 2001·Granted Jan 14, 2003·41 cites·11 claims
- 0879US6643152B2DC power supply deviceHITACHI LTD·Filed 2002·Granted Nov 4, 2003·26 cites·9 claims
- 0968US6603671B2Synchronized rectifier voltage step down DC-DC converter and control circuit thereforHITACHI LTD·Filed 2001·Granted Aug 5, 2003·22 cites·22 claims
- 1040US2003197494A1DC-DC converter and a method of controlling thereofHITACHI LTD·Filed 2003·Application pending·0 cites
- 1140US2002186576A1Backup power supplyFiled 2002·Application pending·0 cites
- 1235US2002185994A1DC-DC converter and a method of controlling thereofHITACHI LTD·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →