ClassID:

137252

F01L3/02 - CPC Classification

Classification description:

Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials

Sub-classes:
Recent Application in this class:
#1
20260062786
2026-03-05

METHOD OF MANUFACTURING NITRIDED VALVE SEAT INSERT WITH SUPERSATURATED NITROGEN SURFACE LAYER AND PRODUCT THEREOF

#2
20260022676
2026-01-22

AIR-COOLED, FOUR-STROKE AVIATION ENGINE

#3
20250354504
2025-11-20

TAPERED ENGINE EXHAUST VALVE

#4
20250243792
2025-07-31

SLIDING MEMBER AND INTERNAL COMBUSTION ENGINE

#5
20240344467
2024-10-17

IRON-BASED SINTERED ALLOY VALVE SEAT INSERT FOR INTERNAL COMBUSTION ENGINE

#6
20240337227
2024-10-10

AIR-COOLED, FOUR-STROKE AVIATION ENGINE

#7
20240328333
2024-10-03

large-size diesel exhaust valve and manufacturing method thereof

#8
20240254900
2024-08-01

HOLLOW POPPET VALVE AND METHOD OF MANUFACTURING

#9
20240240577
2024-07-18

VALUE FOR AN INTERNAL COMBUSTION ENGINE AND PRODUCTION METHOD

#10
20240191332
2024-06-13

Iron-based sintered alloy valve seat

#11
20240011452
2024-01-11

Internal combustion engine with reduced oil maintenance

#12
20240003313
2024-01-04

Internal combustion engine

#13
20230407425
2023-12-21

TREATMENT METHOD AND PROCESS FOR VALVE SEAT

#14
20230358151
2023-11-09

Hollow engine valve and production method thereof

#15
20230160031
2023-05-25

Martensitic wear resistant alloy strengthened through aluminum nitrides

#16
20230097245
2023-03-30

Internal combustion engine with reduced oil maintenance

#17
20230084759
2023-03-16

Layer sintered valve seat ring, process for its production, combinations therewith and their use

#18
20230052425
2023-02-16

CAMSHAFT RETAINERS WITH AS-PRESSED WINDAGE RELIEF HOLES AND A METHOD OF MAKING THE SAME

#19
20230040082
2023-02-09

Air-cooled, four-stroke aviation engine

#20
20220349487
2022-11-03

Sintered valve seat insert and method of manufacture thereof

#21
20220307391
2022-09-29

PLATE VALVE FOUR STOKE HEAD

#22
20220243296
2022-08-04

Martensitic wear resistant alloy strengthened through aluminum nitrides

#23
20220162968
2022-05-26

Valve seat for automotive cylinder head

#24
20220034243
2022-02-03

Engine valve with raised ring or dimple

#25
20210404353
2021-12-30

Method to attach copper alloy valve inserts to aluminum cylinder head

#26
20210404034
2021-12-30

Copper alloy for engine valve seats manufactured by laser cladding

#27
20210395862
2021-12-23

Copper alloy for valve seats

#28
20210324913
2021-10-21

Sliding member and member for internal combustion engine

#29
20210323085
2021-10-21

Corrosion and Wear Resistant Overlay, Method for Forming Corrosion and Wear Resistant Overlay, and Corrosion and Wear Resistant Valve

#30
20210310401
2021-10-07

COMBUSTION-CHAMBER STRUCTURE OF ENGINE

#31
20210215071
2021-07-15

Iron-based sintered alloy valve seat for internal combustion engine

#32
20210180480
2021-06-17

Engine valve with raised ring or dimple

#33
20210180478
2021-06-17

Engine head assembly with valve seat insert with stiffness relief cutout

#34
20210172034
2021-06-10

Preparing method of engine valve

#35
20210148257
2021-05-20

Valve seat ring of a gas exchange valve and gas exchange valve

#36
20210140365
2021-05-13

Internal combustion engine

#37
20210078073
2021-03-18

COPPER ALLOY COMPOSITIONS HAVING ENHANCED THERMAL CONDUCTIVITY AND WEAR RESISTANCE

#38
20200347756
2020-11-05

Internally cooled valve for an internal combustion engine

#39
20200318515
2020-10-08

Method of controlling operation of an exhaust gas treatment apparatus

#40
20200290127
2020-09-17

Method for manufacture a metallic component by pre-manufactured bodies

#41
20200284173
2020-09-10

SINTERED FERROUS ALLOY VALVE SEAT EXHIBITING EXCELLENT THERMAL CONDUCTIVITY FOR USE IN INTERNAL COMBUSTION ENGINE

#42
20200263575
2020-08-20

High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof

#43
20200232354
2020-07-23

Internal combustion engine with at least one hollow-head valve

#44
20200173317
2020-06-04

CYLINDER HEAD ASSEMBLY HAVING A HYBRID VALVE SEAT INSERT

#45
20200157978
2020-05-21

Method for producing a copper-infiltrated valve seat ring

#46
20200102629
2020-04-02

High temperature alloy for casting engine valves

#47
20190360366
2019-11-28

Sintered valve seat

#48
20190309662
2019-10-10

Gasket with an improved heat dissipation capacity for a valve of an internal combustion engine

#49
20190309661
2019-10-10

Gasket for a valve of an internal combustion engine

#50
20190210105
2019-07-11

IRON-BASED SINTERED POWDER METAL FOR WEAR RESISTANT APPLICATIONS

#51
20190154160
2019-05-23

Weldable, low lead and lead-free plumbing fittings and methods of making the same

#52
20190143415
2019-05-16

Valve seat ring

#53
20190128150
2019-05-02

Valve for internal-combustion engines

#54
20190105714
2019-04-11

Method for producing a valve seat ring by powder metallurgy

#55
20190055860
2019-02-21

High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof

#56
20190030595
2019-01-31

Method for filling with metallic sodium

#57
20190017419
2019-01-17

Secure engine insert and process for installing

#58
20190009327
2019-01-10

Method of casting valve seat inserts and casting apparatus

#59
20190001447
2019-01-03

METHOD OF MANUFACTURING HIGH-CONDUCTIVITY WEAR RESISTANT SURFACE ON A SOFT SUBSTRATE

#60
20180313238
2018-11-01

Exhaust valve for an internal combustion engine, and a method of strengthening an annular valve seat area in an exhaust valve

#61
20180298792
2018-10-18

INTERNAL COMBUSTION ENGINE COMPONENT AND PRODUCING METHOD THEREFOR

#62
20180283234
2018-10-04

Sintered valve seat

#63
20180223902
2018-08-09

Sliding member and manufacturing method therefor

#64
20180209311
2018-07-26

Tribological system, comprising a valve seat ring and a valve

#65
20180171836
2018-06-21

VALVE GUIDE

#66
20180163579
2018-06-14

Valve seat insert

#67
20180135476
2018-05-17

Gas Exchange Valve For An Internal Combustion Engine And Internal Combustion Engine

#68
20180112630
2018-04-26

Pressure regulator

#69
20180100217
2018-04-12

Nickel alloys for exhaust system components

#70
20180087135
2018-03-29

Copper infiltrated molybdenum and/or tungsten base powder metal alloy for superior thermal conductivity

#71
20180080104
2018-03-22

Manufacturing method of wear-resistant iron-based sintered alloy and wear-resistant iron-based sintered alloy

#72
20170342873
2017-11-30

Windowed intake valve stem

#73
20170298790
2017-10-19

Highly thermally conductive valve seat ring

#74
20170297149
2017-10-19

CLADDING ALLOY POWDER AND METHOD FOR PRODUCING ENGINE VALVE USING THE SAME

#75
20170276032
2017-09-28

Engine valve and method of producing the same

#76
20170253950
2017-09-07

Wear-resistant copper-base alloy

#77
20170211434
2017-07-27

Poppet valve and method for manufacturing same

#78
20170175596
2017-06-22

Valve seat insert for internal combustion engine having excellent wear resistance

#79
20170159610
2017-06-08

Pressure regulator

#80
20170145875
2017-05-25

Sintered valve seat and its production method

#81
20170089228
2017-03-30

Valve seat of sintered iron-based alloy

#82
20170051642
2017-02-23

Iron-based alloys and methods of making and use thereof

#83
20170037495
2017-02-09

Wear-resistant copper-based alloy, cladding alloy, cladding layer, and valve system member and sliding member for internal combustion engine

#84
20170021423
2017-01-26

Method for manufacturing a metallic component by pre-manufactured bodies

#85
20170014951
2017-01-19

Laser build-up method

#86
20160375494
2016-12-29

Method for producing a valve seat ring

#87
20160356186
2016-12-08

Hollow poppet valve

#88
20160348545
2016-12-01

Sliding mechanism

#89
20160333456
2016-11-17

Valve seat

#90
20160326919
2016-11-10

Assembly of internal combustion engine valve and valve seat

#91
20160312668
2016-10-27

Double/triple-layer valve guide

#92
20160312341
2016-10-27

Hardened nickel-chromium-titanium-aluminum alloy with good wear resistance, creep resistance, corrosion resistance and workability

#93
20160311071
2016-10-27

Method of manufacturing high-conductivity wear resistant surface on a soft substrate

#94
20160289807
2016-10-06

HARDENING NICKEL-CHROMIUM-IRON-TITANIUM-ALUMINIUM ALLOY WITH GOOD WEAR RESISTANCE, CREEP STRENGTH, CORROSION RESISTANCE AND PROCESSABILITY

#95
20160273418
2016-09-22

Single crystal engine valve

#96
20160265396
2016-09-15

Exhaust valve and an engine assembly including the exhaust valve having a pressure relief apparatus

#97
20160245132
2016-08-25

Iron-based alloys and methods of making and use thereof

#98
20160201527
2016-07-14

Valve seat

#99
20160169062
2016-06-16

System and method of cooling valve with material in cavity

#100
20160160699
2016-06-09

VALVE SEAT STRUCTURE

#101
20160136758
2016-05-19

Cladding method for valve seat and production method for cylinder head

#102
20160121400
2016-05-05

Method for manufacturing a titanium-aluminum alloy part

#103
20160102387
2016-04-14

Alloy powder for overlay welding, and weld overlay alloy member and engine valve obtained using the same

#104
20160090878
2016-03-31

Low-cost, high-strength Fe—Ni—Cr alloys for high temperature exhaust valve applications

#105
20150377089
2015-12-31

Valve for internal combustion engines and method for obtaining a valve

#106
20150369090
2015-12-24

Highly wear-resistant valve seat for use in internal combustion engine

#107
20150368760
2015-12-24

Low-cost Fe—Ni—Cr alloys for high temperature valve applications

#108
20150322828
2015-11-12

Highly thermally conductive valve seat ring

#109
20150308303
2015-10-29

Intake valve for engine

#110
20150292640
2015-10-15

Engine valve

#111
20150285109
2015-10-08

EXHAUST VALVE FOR AN INTERNAL COMBUSTION ENGINE, AND A METHOD OF STRENGTHENING AN ANNULAR VALVE SEAT AREA IN AN EXHAUST VALVE

#112
20150275343
2015-10-01

Iron-base sintered alloy material for valve seat insert and method for manufacturing the same

#113
20150152753
2015-06-04

Sintered iron-based alloy valve seat

#114
20150152752
2015-06-04

High performance nickel-based alloy

#115
20150152529
2015-06-04

Ni—Fe—Cr alloy and engine valve welded with the same alloy

#116
20150076386
2015-03-19

Iron-based alloys and methods of making and use thereof

#117
20150047596
2015-02-19

Valve seat

#118
20150034037
2015-02-05

Iron-based alloys and methods of making and use thereof

#119
20150007792
2015-01-08

Cylinder head assembly having cooled valve insert

#120
20140338630
2014-11-20

Dosing valve for additives at risk of freezing, method for producing a dosing valve and motor vehicle

#121
20140305398
2014-10-16

Cylinder head comprising a shroud

#122
20140301886
2014-10-09

Iron-based sintered powder metal for wear resistant applications

#123
20140212321
2014-07-31

Heat-resisting steel for exhaust valves

#124
20140076260
2014-03-20

Corrosion and wear resistant iron based alloy useful for internal combustion engine valve seat inserts and method of making and use thereof

#125
20140014057
2014-01-16

Heat transferring engine valve for fuel conservation

#126
20130306019
2013-11-21

High-toughness cobalt-based alloy and engine valve coated with same

#127
20130291822
2013-11-07

VALVE SEAT MADE OF IRON-BASED SINTERED ALLOY

#128
20130276728
2013-10-24

Valve system

#129
20130259733
2013-10-03

Sintered alloy for valve seat and manufacturing method of exhaust valve seat using the same

#130
20130220263
2013-08-29

Valve system for controlling the charge exchange

#131
20130121869
2013-05-16

Multicomponent titanium aluminide article and method of making

#132
20130068986
2013-03-21

Engine valve seat and manufacturing method thereof

#133
20130028780
2013-01-31

Iron-based sintered powder metal for wear resistant applications

#134
20120319026
2012-12-20

Valve seat

#135
20120305825
2012-12-06

ENGINE VALVE FOR AUTOMOBILE MADE OF TITANIUM ALLOY EXCELLENT IN HEAT RESISTANCE

#136
20120227389
2012-09-13

RECIPROCATING MACHINE & OTHER DEVICES

#137
20120199092
2012-08-09

Intake valve of internal combustion engine

#138
20120107169
2012-05-03

Heat-resisting steel for engine valves excellent in high temperature strength

#139
20110303865
2011-12-15

Cladding alloy powder, alloy-clad member, and engine valve

#140
20110236247
2011-09-29

HEAT RESISTANT STEEL FOR EXHAUST VALVE

#141
20110209468
2011-09-01

Movable wall member in form of an exhaust valve spindle or a piston for internal combustion engine, and a method of manufacturing such a member

#142
20110182764
2011-07-28

Heat-resisting steel for engine valves excellent in high-temperature strength

#143
20110162612
2011-07-07

Iron-chromium alloy with improved compressive yield strength and method of making and use thereof

#144
20110155088
2011-06-30

ENGINE VALVES

#145
20110143158
2011-06-16

Powder metal component tolerance improvements

#146
20110126791
2011-06-02

Exhaust poppet valve and solution heat treatment method of the same

#147
20110100316
2011-05-05

Cylinder Head Assembly For An Internal Combustion Engine and Method of Manufacture

#148
20110091344
2011-04-21

Iron-based sintered powder metal for wear resistant applications

#149
20110031886
2011-02-10

Plasma apparatus using a valve

#150
20110030642
2011-02-10

Inlet valve, internal combustion engine and transportation apparatus including the same

#151
20110030347
2011-02-10

After-treatment apparatus for exhaust gas right after a combustion chamber

#152
20110023808
2011-02-03

Iron-based sintered alloy for valve seat, and valve seat for internal combustion engine

#153
20100316523
2010-12-16

Iron-based alloy powder

#154
20100300417
2010-12-02

INTERNAL COMBUSTION ENGINE HAVING A TRANSITIONALLY SEGREGATED COMBUSTION CHAMBER

#155
20100272597
2010-10-28

NICKEL BASED ALLOY USEFUL FOR VALVE SEAT INSERTS

#156
20100147247
2010-06-17

Superaustenitic stainless steel and method of making and use thereof

#157
20100104466
2010-04-29

Particle dispersion copper alloy and method for producing the same

#158
20090314389
2009-12-24

Ion Nitriding Method

#159
20090301615
2009-12-10

Method for producing an internal combustion engine valve and valve obtained in this manner

#160
20090282675
2009-11-19

Method of making titanium-based automotive engine valves

#161
20090266314
2009-10-29

COOLANT-CONTAINING HOLLOW POPPET VALVE AND PROCESS FOR PRODUCING THE SAME

#162
20090257906
2009-10-15

Cobalt-rich wear resistant alloy and method of making and use thereof

#163
20090165595
2009-07-02

Hard-particle powder for sintered body and sintered body

#164
20090151708
2009-06-18

INTERNAL COMBUSTION ENGINE HAVING A SELECTIVELY INSULATED COMBUSTION CHAMBER

#165
20090151163
2009-06-18

Method for manufacturing cast iron member

#166
20090094830
2009-04-16

Valve for Controlling Gas Exchange, Especially in Internal Combustion Engines

#167
20090050675
2009-02-26

Friction Welding Method and Components Produced From Steel and Metal Aluminide Using an Intermediary From an Ni Alloy

#168
20090044780
2009-02-19

Special improved durability engine device for use with stationary power generation systems

#169
20080237304
2008-10-02

Engine component having friction welded inserts

#170
20080141921
2008-06-19

Marine hulls and drives

#171
20080083391
2008-04-10

Raw material powder for laser clad valve seat and valve seat using the same

#172
20080008617
2008-01-10

Wear resistant high temperature alloy

#173
20080006793
2008-01-10

Valve for Controlling Gas Exchange, Especially in Internal Combustion Engines

#174
20080001115
2008-01-03

Nickel-rich wear resistant alloy and method of making and use thereof

#175
20070277769
2007-12-06

Valve structure for internal combustion

#176
20070227631
2007-10-04

Copper-zinc alloy for a valve guide

#177
20070193546
2007-08-23

Valve seat rings made of basic Co or Co/Mo alloys, and production thereof

#178
20070169585
2007-07-26

Alloy powder for forming hard phase and ferriferous mixed powder using the same, and manufacturing method for wear resistant sintered alloy and wear resistant sintered alloy

#179
20070101964
2007-05-10

Valve seat for engine method of manufacturing the valve seat, and cylinder head for engine

#180
20070086910
2007-04-19

Acid resistant austenitic alloy for valve seat insert

#181
20070081914
2007-04-12

Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor

#182
20070068477
2007-03-29

Engine valve, method of manufacturing same, and cylinder head incorporating same

#183
20070065331
2007-03-22

Build-up wear-resistant copper-based alloy

#184
20070057238
2007-03-15

Particle dispersion copper alloy and method for producing the same

#185
20070017475
2007-01-25

Valve guide structure

#186
20060292386
2006-12-28

Titanium part for internal combustion engine

#187
20060283526
2006-12-21

Wear resistant alloy for valve seat insert used in internal combustion engines

#188
20060254553
2006-11-16

Multipart composite valve for an internal combustion engine

#189
20060207386
2006-09-21

Alloy powder for forming hard phase and ferriferous mixed powder using the same, and manufacturing method for wear resistant sintered alloy and wear resistant sintered alloy

#190
20060157171
2006-07-20

Heat resistant alloy for exhaust valves durable at 900°C and exhaust valves made of the alloy

#191
20060153996
2006-07-13

Method and system for laser cladding

#192
20060108029
2006-05-25

Build-up wear-resistant copper alloy and valve seat

#193
20060045786
2006-03-02

Method of making valve guide by powder metallurgy process

#194
20060032328
2006-02-16

Sintered valve guide and manufacturing method thereof

#195
20050230007
2005-10-20

Valve spring retainer made of titanium

#196
20050193861
2005-09-08

Iron-based sintered alloy material for valve seat

#197
20050132842
2005-06-23

Alloy powder for forming hard phase and ferriferous mixed powder using the same, and manufacturing method for wear resistant sintered alloy and wear resistant sintered alloy

#198
20050076875
2005-04-14

Multi-piece valve for reciprocating piston engines

#199
20050034700
2005-02-17

Method for the production of a valve seat

#200
20050002823
2005-01-06

Process for producing a valve seat

#201
17539614
2022-12-13

Nickel-niobium intermetallic alloy useful for valve seat inserts

#202
17368261
2022-12-20

Low-carbon iron-based alloy useful for valve seat inserts