Inventor
KITAHARA YUICHI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “KITAHARA YUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
19 patentsUS6161378ADec 19, 2000
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine
HITACHI LTD71 citations96
US6045764AApr 4, 2000
Exhaust gas purifying method and catalyst used therefor
HITACHI LTD68 citations96
US5791139AAug 11, 1998
Fuel injection control method for an internal-combustion engine provided with NOx reducing catalytic converter and fuel injection controller
HITACHI LTD24 citations93
US6630115B1Oct 7, 2003
Exhaust emission control process for internal combustion engines
HITACHI LTD30 citations92
US6397582B1Jun 4, 2002
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine
HITACHI LTD24 citations92
US6272848B1Aug 14, 2001
Exhaust gas cleaning apparatus and method for internal combustion engine
HITACHI LTD49 citations92
US5968870AOct 19, 1999
Catalyst for purifying exhaust gas from internal combustion engine and purifying method thereof
HITACHI LTD24 citations92
US7010910B2Mar 14, 2006
Exhaust gas purification apparatus
HITACHI LTD13 citations83
US6517784B1Feb 11, 2003
Exhaust gas purifying apparatus for an internal combustion engine
HITACHI LTD8 citations74
US6401454B2Jun 11, 2002
Engine control device
HITACHI LTD10 citations74
US6212880B1Apr 10, 2001
Engine control device
HITACHI LTD7 citations74
US6093377AJul 25, 2000
Removal of nitrogen oxides from exhaust gas using catalyst
HITACHI LTD11 citations74
US6841511B2Jan 11, 2005
Internal combustion engine exhaust gas purification apparatus, exhaust gas purification process and exhaust gas purification catalyst
HITACHI LTD8 citations73
US6305161B1Oct 23, 2001
Method of purifying exhaust gas of internal combustion engine and apparatus thereof
HITACHI LTD12 citations73
US5972828AOct 26, 1999
Method of manufacturing catalyst for cleaning exhaust gas released from internal combustion engine, and catalyst for the same
HITACHI LTD12 citations73
US6883305B1Apr 26, 2005
Method for cleaning exhaust gas from an internal combustion engine
HITACHI LTD3 citations62
US6596247B1Jul 22, 2003
Method for purifying exhaust gas from internal combustion engines
HITACHI LTD4 citations62
US7438866B2Oct 21, 2008
Emission gas purification catalyst and internal combustion engine provided with the catalyst
HITACHI LTD6 citations60
US6823659B2Nov 30, 2004
Moisture removal device and method thereof for internal combustion engine use exhaust gas cleaning device
HITACHI LTD4 citations60