Assignee
NOK CORP
JP672 patents
Top patents by PatentIndex Score
US6156173ADec 5, 2000
Enzyme electrode structure
NOK CORP167 citations99
US6071391AJun 6, 2000
Enzyme electrode structure
NOK CORP1,183 citations99
US6726211B1Apr 27, 2004
Sealing device
NOK CORP64 citations96
US6337120B1Jan 8, 2002
Gasket for layer-built fuel cells and method for making the same
NOK CORP83 citations96
US4928979AMay 29, 1990
Sealing apparatus
NOK CORP55 citations96
US4623153ANov 18, 1986
Radial oil seal
NOK CORP134 citations96
US6231053B1May 15, 2001
Gasket for fuel cell
NOK CORP111 citations95
US6220275B1Apr 24, 2001
Solenoid valve
NOK CORP70 citations95
US6003539ADec 21, 1999
Differential pressure regulating valve and liquid shut-off valve device
NOK CORP71 citations95
US5409041AApr 25, 1995
Laminated sheet
NOK CORP52 citations95
US5269536ADec 14, 1993
Sealing device
NOK CORP59 citations95
US4981303AJan 1, 1991
Sealing device
NOK CORP55 citations95
US10865883B2Dec 15, 2020
Sealing ring
NOK CORP24 citations94
US5771936AJun 30, 1998
Accumulator, process and apparatus for making the same
NOK CORP36 citations94
US5183271AFeb 2, 1993
Sealing device and manufacturing method of the same
NOK CORP71 citations94
US7674044B2Mar 9, 2010
Sealing device
NOK CORP20 citations93
US7464939B2Dec 16, 2008
Sealing device with rotation detecting element
NOK CORP21 citations93
US7202445B2Apr 10, 2007
Door mirror heater
NOK CORP23 citations93
US6649097B2Nov 18, 2003
Method of making a gasket for layer-built fuel cells
NOK CORP57 citations93
US6334618B1Jan 1, 2002
Sealing device
NOK CORP22 citations93
US6102409AAug 15, 2000
Sealing device
NOK CORP44 citations93
US5915696AJun 29, 1999
Oil seals and method of making thereof
NOK CORP45 citations93
US5884919AMar 23, 1999
Sealing device and sealing device manufacturing method
NOK CORP25 citations93
US5865443AFeb 2, 1999
Seal ring
NOK CORP19 citations93
US5649709AJul 22, 1997
Shaft seal with dust sealing lip
NOK CORP68 citations93
US5246761ASep 21, 1993
Bladder for an accumulator
NOK CORP43 citations93
US4995623AFeb 26, 1991
Sealing device for reciprocating member
NOK CORP37 citations93
US4699526AOct 13, 1987
Sealing device for bearings
NOK CORP41 citations93
USD802104SNov 7, 2017
Seal
NOK CORP23 citations92
USD752177SMar 22, 2016
Cartridge for a water purifier
NOK CORP22 citations92
USD750736SMar 1, 2016
Cartridge for a water purifier
NOK CORP30 citations92
US7816454B2Oct 19, 2010
Polyol-crosslinkable fluoro-rubber composition
NOK CORP19 citations92
US7770599B2Aug 10, 2010
Accumulator
NOK CORP22 citations92
US7063911B1Jun 20, 2006
Gasket for fuel cell and method of forming it
NOK CORP52 citations92
US6976788B2Dec 20, 2005
Thrust bearing
NOK CORP30 citations92
US6805986B2Oct 19, 2004
Gasket for fuel battery
NOK CORP18 citations92
US6720103B1Apr 13, 2004
Fuel cell
NOK CORP49 citations92
US6672592B1Jan 6, 2004
Magnetic fluid seal
NOK CORP26 citations92
US6401322B1Jun 11, 2002
Method of manufacturing a sealing apparatus
NOK CORP33 citations92
US6182975B1Feb 6, 2001
Sealing device having an annular space between sealing lips
NOK CORP35 citations92
US6144275ANov 7, 2000
Solenoid actuator
NOK CORP34 citations92
US5957113ASep 28, 1999
Fuel vapor recovery apparatus
NOK CORP95 citations92
US5653864AAug 5, 1997
Protein biosensor and method for protein measurement with the same
NOK CORP29 citations92
US5644068AJul 1, 1997
Gas sensor
NOK CORP24 citations92
US5640236AJun 17, 1997
Method and apparatus for detecting the position of defect in a hollow fiber membrane module
NOK CORP31 citations92
USRE35309EAug 6, 1996
Sealing device
NOK CORP34 citations92
US5535614AJul 16, 1996
Thermal conductivity gas sensor for measuring fuel vapor content
NOK CORP41 citations92
US5529280AJun 25, 1996
Diaphragm Valve
NOK CORP37 citations92
US5524671AJun 11, 1996
Laminated sheet
NOK CORP20 citations92
US5411682AMay 2, 1995
Method and apparatus for detecting the position of defect in a hollow fiber membrane module
NOK CORP30 citations92
Showing the top 50 of 672 patents by PatentIndex Score.