Assignee
FUJI VALVE
JP70 patents
Top patents by PatentIndex Score
US5983847ANov 16, 1999
Electric valve drive device in an internal combustion engine
FUJI VALVE65 citations94
US5427141AJun 27, 1995
Pressure fluid control valve device
FUJI VALVE73 citations94
US5740769AApr 21, 1998
Method of adjusting a valve clearance
FUJI VALVE17 citations92
US6382246B2May 7, 2002
Valve position detector
FUJI VALVE26 citations91
US5799683ASep 1, 1998
Poppet valve and method of manufacturing it
FUJI VALVE19 citations91
US5455078AOct 3, 1995
Method of roughening and coating the contact surface of a valve lifter
FUJI VALVE23 citations91
US5769037AJun 23, 1998
Hollow valve in an internal combustion engine
FUJI VALVE30 citations90
US5485815AJan 23, 1996
Poppet valve device
FUJI VALVE41 citations90
US5431136AJul 11, 1995
Internal combustion valve having an iron based hard-facing alloy contact surface
FUJI VALVE21 citations90
US5370364ADec 6, 1994
Titanium alloy engine valve shaft structure
FUJI VALVE32 citations90
US6131603AOct 17, 2000
Ti alloy poppet valve and surface treatment thereof
FUJI VALVE19 citations88
US6354001B1Mar 12, 2002
Method of manufacturing a Ti alloy poppet value
FUJI VALVE17 citations83
US5988123ANov 23, 1999
Method of controlling an electric valve drive device and a control system therefor
FUJI VALVE18 citations82
US4920935AMay 1, 1990
Hydraulic valve lash adjuster
FUJI VALVE19 citations80
US4887566ADec 19, 1989
Hydraulic valve lash adjuster
FUJI VALVE21 citations80
US6619251B2Sep 16, 2003
Tappet for an internal combustion engine
FUJI VALVE8 citations74
US5884596AMar 23, 1999
Valve spring in an internal combustion engine
FUJI VALVE5 citations74
US5787596AAug 4, 1998
Apparatus for simultaneously measuring thickness of bottom wall and inside diameter of bottoming hole
FUJI VALVE12 citations74
US6295731B1Oct 2, 2001
Method of hardening a valve face of a poppet valve
FUJI VALVE11 citations73
US6073912AJun 13, 2000
Al or Al alloy poppet valve and a method of manufacturing the same
FUJI VALVE7 citations73
US6073345AJun 13, 2000
Method of manufacturing a tappet
FUJI VALVE7 citations73
US5970613AOct 26, 1999
Method of manufacturing a wear resistant cylinder
FUJI VALVE5 citations73
US5611306AMar 18, 1997
Internal combustion engine valve
FUJI VALVE17 citations73
US5289804AMar 1, 1994
Tappet in an internal combustion engine
FUJI VALVE7 citations73
US6691910B2Feb 17, 2004
Method of joining different metal materials by friction welding
FUJI VALVE12 citations72
US6341588B2Jan 29, 2002
Valve spring retainer and a valve operating mechanism
FUJI VALVE7 citations72
US5537744AJul 23, 1996
Tappet for an IC engine
FUJI VALVE8 citations72
US5899185AMay 4, 1999
Method of increasing heat transfer of a fitted material of a cylinder head in an internal combustion engine and a fitted portion of the fitted material
FUJI VALVE8 citations71
US5570663ANov 5, 1996
Valve rotator
FUJI VALVE8 citations71
US5543029AAug 6, 1996
Properties of the surface of a titanium alloy engine valve
FUJI VALVE11 citations71
US5239953AAug 31, 1993
Hydraulic tappet for an internal combustion engine
FUJI VALVE9 citations71
US4986166AJan 22, 1991
Hydraulic valve lash adjuster
FUJI VALVE8 citations71
US5675969AOct 14, 1997
Exhaust gas control device in an internal combustion engine
FUJI VALVE12 citations70
US5674111AOct 7, 1997
Method of processing a workpiece
FUJI VALVE13 citations70
US5662078ASep 2, 1997
Intake valve device for preventing adhesion of deposits
FUJI VALVE17 citations69
US5551908ASep 3, 1996
Centerless grinder and wheel truing device therefor
FUJI VALVE16 citations69
US5901728AMay 11, 1999
Aluminum alloy valve spring retainer and method of making same
FUJI VALVE6 citations63
US5758415AJun 2, 1998
Method of manufacturing a tappet in an internal combustion engine
FUJI VALVE4 citations63
US5616192AApr 1, 1997
Coil retainer for engine valve and preparation of the same
FUJI VALVE6 citations63
US5349748ASep 27, 1994
Method of manufacturing a tappet for an internal combustion engine
FUJI VALVE3 citations63
US5269268ADec 14, 1993
Tappet in an internal combustion engine and method of manufacturing the same
FUJI VALVE6 citations63
US6209197B1Apr 3, 2001
Method of manufacturing tappet in an internal combustion engine
FUJI VALVE4 citations62
US6044552AApr 4, 2000
Tappet made of light metal and a method of manufacturing the same
FUJI VALVE3 citations62
US5943990AAug 31, 1999
Tappet in an internal combustion engine and a method of manufacturing the same
FUJI VALVE3 citations62
US5605122AFeb 25, 1997
Tappet in an internal combustion engine and a method of manufacturing it
FUJI VALVE3 citations62
US6592683B2Jul 15, 2003
Ti alloy surface treatment
FUJI VALVE3 citations61
US6511045B2Jan 28, 2003
Ti alloy poppet valve and a method of manufacturing the same
FUJI VALVE2 citations61
US6338325B1Jan 15, 2002
Valve operating mechanism of an internal combustion engine
FUJI VALVE4 citations61
US6311661B1Nov 6, 2001
Valve spring retainer and a valve operating mechanism
FUJI VALVE4 citations61
US6293240B1Sep 25, 2001
Valve spring retainer and a valve operating mechanism
FUJI VALVE2 citations61
Showing the top 50 of 70 patents by PatentIndex Score.