Inventor · disambiguated record
Toshifumi Hiratsuka
Also filed as: HIRATSUKA TOSHIFUMI
9 granted patents·3 pending applications·271 citations·filing 1996–2007
91Inventor score
Top patents by PatentIndex Score
12 records- 0194US6161378AExhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engineHITACHI LTD·Filed 1997·Granted Dec 19, 2000·71 cites·29 claims
- 0285US6045764AExhaust gas purifying method and catalyst used thereforHITACHI LTD·Filed 1996·Granted Apr 4, 2000·68 cites·6 claims
- 0384US6397582B1Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engineHITACHI LTD·Filed 2000·Granted Jun 4, 2002·24 cites·20 claims
- 0477US6272848B1Exhaust gas cleaning apparatus and method for internal combustion engineHITACHI LTD·Filed 1998·Granted Aug 14, 2001·49 cites·24 claims
- 0571US6630115B1Exhaust emission control process for internal combustion enginesHITACHI LTD·Filed 1999·Granted Oct 7, 2003·30 cites·6 claims
- 0662US6841511B2Internal combustion engine exhaust gas purification apparatus, exhaust gas purification process and exhaust gas purification catalystHITACHI LTD·Filed 2003·Granted Jan 11, 2005·8 cites·12 claims
- 0757US7093432B2Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engineHONDA MOTOR CO LTD·Filed 2002·Granted Aug 22, 2006·5 cites·6 claims
- 0852US2007204595A1Exhaust Gas Purification Apparatus of Internal Combustion Engine and Catalyst for Purifying Exhaust Gas of Internal Combustion EngineHONDA MOTOR CO LTD·Filed 2007·Application pending·0 cites
- 0947US6823659B2Moisture removal device and method thereof for internal combustion engine use exhaust gas cleaning deviceHITACHI LTD·Filed 2003·Granted Nov 30, 2004·4 cites·4 claims
- 1044US5972828AMethod of manufacturing catalyst for cleaning exhaust gas released from internal combustion engine, and catalyst for the sameHITACHI LTD·Filed 1997·Granted Oct 26, 1999·12 cites·11 claims
- 1144US2005089456A1Exhaust gas purifcation apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engineHITACHI LTD·Filed 2004·Application pending·0 cites
- 1240US2003154713A1Exhaust gas purifying device for internal combustion engineHITACHI LTD·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →