Inventor
HIRATSUKA TOSHIFUMI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “HIRATSUKA TOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 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
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
US6841511B2Jan 11, 2005
Internal combustion engine exhaust gas purification apparatus, exhaust gas purification process and exhaust gas purification catalyst
HITACHI LTD8 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
US6823659B2Nov 30, 2004
Moisture removal device and method thereof for internal combustion engine use exhaust gas cleaning device
HITACHI LTD4 citations60