Inventor
KOYAMA NOBUHIKO
JP23 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA NOBUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DENSO CORP
9 patentsUS7272485B2Sep 18, 2007
Fuel nature measuring device of internal combustion engine and internal combustion engine having the same
DENSO CORP24 citations92
US6701902B2Mar 9, 2004
Activated carbon canister
DENSO CORP29 citations92
US6604407B2Aug 12, 2003
Leak check apparatus for fuel vapor purge system
DENSO CORP47 citations92
US5915364AJun 29, 1999
Canister for use in evaporative emission control system for automotive vehicle
DENSO CORP23 citations89
US7409947B2Aug 12, 2008
Fuel vapor treatment apparatus
DENSO CORP16 citations84
US7341048B2Mar 11, 2008
Fuel vapor treatment apparatus
DENSO CORP17 citations83
US6666072B2Dec 23, 2003
Evaporative emission control system and method for detecting leaks therein
DENSO CORP14 citations82
US6634343B2Oct 21, 2003
Evaported fuel processor and fault diagnosing apparatus therefor
DENSO CORP10 citations74
US6394074B1May 28, 2002
Vapor fuel processing system having canister for absorbing vapor fuel contained in fuel tank
DENSO CORP9 citations74
NIPPON DENSO CO
8 patentsUS5564398AOct 15, 1996
Simplified canister for prevention of atmospheric diffusion of fuel vapor from a vehicle
NIPPON DENSO CO118 citations98
US4919103AApr 24, 1990
Device for controlling evaporative emission from a fuel tank
NIPPON DENSO CO163 citations97
US5743943AApr 28, 1998
Evaporated fuel adsorbing canister preventing diffusion of fuel therethrough
NIPPON DENSO CO57 citations96
US5501198AMar 26, 1996
Fuel vapor control apparatus for an internal combustion engine
NIPPON DENSO CO60 citations96
US4951643AAug 28, 1990
Fuel vapor treatment apparatus
NIPPON DENSO CO69 citations96
US5601065AFeb 11, 1997
Fuel evaporation gas transpiration prevention system
NIPPON DENSO CO24 citations92
US5535719AJul 16, 1996
Purge-compensated air-fuel ratio control apparatus
NIPPON DENSO CO24 citations92
US5398660AMar 21, 1995
Fuel vapor purging system
NIPPON DENSO CO48 citations89
NIPPON SOKEN
6 patentsUS6971375B2Dec 6, 2005
Fuel vapor treatment system for internal combustion engine
NIPPON SOKEN78 citations97
US6689196B2Feb 10, 2004
Fuel vapor control apparatus
NIPPON SOKEN60 citations96
US7389769B2Jun 24, 2008
Fuel nature measuring device of internal combustion engine and internal combustion engine having the same
NIPPON SOKEN17 citations92
US7008471B2Mar 7, 2006
Filter and canister having the same
NIPPON SOKEN25 citations92
US7219660B2May 22, 2007
Fuel vapor treatment system for internal combustion engine
NIPPON SOKEN12 citations84
US7373929B2May 20, 2008
Fuel nature measuring device of internal combustion engine and internal combustion engine having the same
NIPPON SOKEN8 citations73