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NITTAN VALVA
JP49 patents
Top patents by PatentIndex Score
US4963121AOct 16, 1990
Liquid pressure tensioner
NITTAN VALVA48 citations87
US9790822B2Oct 17, 2017
Hollow poppet valve
NITTAN VALVA7 citations80
US4621598ANov 11, 1986
Hydraulic lash adjustor in a valve operating mechanism
NITTAN VALVA11 citations74
US9739181B2Aug 22, 2017
Hydraulic lash adjuster
NITTAN VALVA3 citations73
US9751164B2Sep 5, 2017
Method of manufacturing a hollow poppet valve
NITTAN VALVA5 citations72
US10710153B2Jul 14, 2020
Method for filling with metallic sodium
NITTAN VALVA3 citations70
US10316390B2Jun 11, 2019
Method for purifying metallic sodium
NITTAN VALVA3 citations70
US6679478B2Jan 20, 2004
Hollow poppet valve and method for manufacturing the same
NITTAN VALVA7 citations70
US6378543B1Apr 30, 2002
Hollow poppet valve and the method for manufacturing the same
NITTAN VALVA13 citations70
US9689506B2Jun 27, 2017
Hollow poppet valve
NITTAN VALVA3 citations69
US11300018B2Apr 12, 2022
Hollow exhaust poppet valve
NITTAN VALVA6 citations68
US9840948B2Dec 12, 2017
Method for supplying inert gas into poppet valve intermediate and apparatus for supplying inert gas into poppet valve intermediate
NITTAN VALVA3 citations68
US9163734B2Oct 20, 2015
Poppet valve with a formed seat, and method of making
NITTAN VALVA5 citations68
US11536167B2Dec 27, 2022
Method for manufacturing engine poppet valve
NITTAN VALVA5 citations67
US10799957B2Oct 13, 2020
Chuck device
NITTAN VALVA3 citations65
US9611953B2Apr 4, 2017
Hollow poppet valve
NITTAN VALVA4 citations65
US10569318B2Feb 25, 2020
Cutting apparatus and cutting blade
NITTAN VALVA3 citations64
US9920663B2Mar 20, 2018
Hollow poppet valve
NITTAN VALVA5 citations63
US5029560AJul 9, 1991
Oil pressure lash adjuster of a directly acting type
NITTAN VALVA2 citations63
US12158195B2Dec 3, 2024
Reduction gear
NITTAN VALVA1 citations62
US10934897B2Mar 2, 2021
Mechanical lash adjuster
NITTAN VALVA1 citations62
US10173257B2Jan 8, 2019
Method of machining screw
NITTAN VALVA1 citations62
US9340372B2May 17, 2016
Workpiece inspection equipment
NITTAN VALVA2 citations61
US7954468B2Jun 7, 2011
Mechanical adjuster
NITTAN VALVA3 citations61
US8001938B2Aug 23, 2011
Valve control apparatus for engine
NITTAN VALVA2 citations59
US9494058B2Nov 15, 2016
Variable cam phaser for automobile engine and controller therefor
NITTAN VALVA2 citations57
US9175788B2Nov 3, 2015
Hollow poppet valve
NITTAN VALVA3 citations57
US8381694B2Feb 26, 2013
Engine valve controller
NITTAN VALVA2 citations57
US10451162B2Oct 22, 2019
Torque transmission device
NITTAN VALVA1 citations52
US9657384B2May 23, 2017
DLC film coating and coated valve lifter
NITTAN VALVA0 citations52
US4991550AFeb 12, 1991
Oil pressure rush adjuster of a directly acting type
NITTAN VALVA1 citations52
US10252307B2Apr 9, 2019
Highly-viscous substance dispensing method and highly-viscous substance dispensing apparatus
NITTAN VALVA0 citations50
US9371915B2Jun 21, 2016
Poppet valve with a formed seat, and method of making
NITTAN VALVA1 citations47
US11298776B2Apr 12, 2022
Friction welding method and friction welding apparatus
NITTAN VALVA0 citations46
US5311845AMay 17, 1994
Oil pressure lash adjuster equipped with air vent
NITTAN VALVA6 citations46
US11285570B2Mar 29, 2022
Method of manufacturing engine valve intermediate product with boss portion
NITTAN VALVA0 citations44
US11143063B2Oct 12, 2021
Cylinder head and engine
NITTAN VALVA0 citations43
US9334977B2May 10, 2016
Engine valve
NITTAN VALVA0 citations43
US10473622B2Nov 12, 2019
Method and apparatus for flaw inspection of friction-weld part of stem in engine valve
NITTAN VALVA0 citations42
US10352203B2Jul 16, 2019
Hydraulic lash adjuster and method for using hydraulic lash adjuster
NITTAN VALVA0 citations42
US10301979B2May 28, 2019
Hydraulic lash adjuster
NITTAN VALVA0 citations42
US9803518B2Oct 31, 2017
Hydraulic lash adjuster
NITTAN VALVA0 citations42
US9339872B2May 17, 2016
Machining apparatus and deburring device
NITTAN VALVA1 citations41
US10804780B2Oct 13, 2020
Hollow single-phase induction motor
NITTAN VALVA0 citations40
US10473002B2Nov 12, 2019
Poppet valve and method for manufacturing same
NITTAN VALVA0 citations36
US10029298B2Jul 24, 2018
Bar material transfer method and conveyor
NITTAN VALVA0 citations35
USRE47823EJan 21, 2020
Direct-acting valve lifter of internal combustion engine
NITTAN VALVA0 citations32
US9657606B2May 23, 2017
Direct-acting valve lifter of internal combustion engine
NITTAN VALVA0 citations32
US9416689B2Aug 16, 2016
Method and apparatus for controlling a phase varying apparatus
NITTAN VALVA0 citations26