ClassID:

43161

B23K20/1275 - CPC Classification

Classification description:

Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding involving metallurgical change

Recent Application in this class:
#1
20260008118
2026-01-08

ELECTRICAL STEEL STRIP FRICTION STIR WELDING METHOD, METHOD OF PRODUCING ELECTRICAL STEEL STRIP, FRICTION STIR WELDING DEVICE, AND ELECTRICAL STEEL STRIP PRODUCTION DEVICE

#2
20240424598
2024-12-26

ELECTRICAL STEEL STRIP FRICTION STIR WELDING METHOD AND METHOD OF PRODUCING ELECTRICAL STEEL STRIP

#3
20220162723
2022-05-26

SURFACE-MODIFYING METHOD FOR STEEL MATERIAL AND STEEL STRUCTURE

#4
20210323085
2021-10-21

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

#5
20200140970
2020-05-07

AN APPARTUS AND A METHOD FOR PROCESSING STAINLESS STEEL AND AN IMPROVED STAINLESS STEEL FOR BIOIMPLANTS THEREOF

#6
20200140967
2020-05-07

Method for modifying surface grain structure of the material and apparatus thereof

#7
20190337088
2019-11-07

WELDING METHOD AND PART MADE BY THE WELDING METHOD

#8
20190314927
2019-10-17

Friction stir spot welding method and friction stir spot welding device

#9
20190193195
2019-06-27

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

#10
20180050420
2018-02-22

Apparatuses and methods for fabricating metal matrix composite structures

#11
20180043420
2018-02-15

Cast part with a metallic functional region

#12
20170307306
2017-10-26

Method for producing a plate heat exchanger using two welds, and a corresponding plate heat exchanger

#13
20170209957
2017-07-27

Joint processing method and dome member

#14
20170114202
2017-04-27

Method of manufacturing polystyrene foam with polymer processing additives

#15
20160354861
2016-12-08

MODIFYING METAL OR ALLOY SUBSTRATES

#16
20160263697
2016-09-15

FRICTION STIR WELDING METHOD FOR HIGH-STRENGTH STEEL SHEETS OR PLATES

#17
20160107262
2016-04-21

Fabrication tools for exerting normal forces on feedstock

#18
20150226150
2015-08-13

Engine piston and a process for making an engine piston

#19
20150209894
2015-07-30

Method and device for the friction stir welding of two components

#20
20150209892
2015-07-30

Method and device for the friction stir welding of two components

#21
20150115019
2015-04-30

Method for Welding at Least Two Layers

#22
20140187657
2014-07-03

METHOD OF MANUFACTURING POLYSTYRENE FOAM WITH POLYMER PROCESSING ADDITIVES

#23
20140134325
2014-05-15

Friction stir fabrication

#24
20140130736
2014-05-15

Fabrication tools for exerting normal forces on feedstock

#25
20130299561
2013-11-14

FRICTION STIR JOINING OF CURVED SURFACES

#26
20130048786
2013-02-28

Reinforcement of friction plug welds

#27
20130032630
2013-02-07

FRICTION STIR WELDING REPAIRING METHOD OF METALLIC HOUSING

#28
20120325380
2012-12-27

Heat resistant alloy member, method for manufacturing the same, and method for repairing the same

#29
20120279442
2012-11-08

Self-reacting friction stir welding tool with the ability to add filler material

#30
20120279441
2012-11-08

System for continuous feeding of filler material for friction stir welding, processing and fabrication

#31
20120273555
2012-11-01

FRICTION STIRRING AND ITS APPLICATION TO DRILL BITS, OIL FIELD AND MINING TOOLS, AND COMPONENTS IN OTHER INDUSTRIAL APPLICATIONS

#32
20120227546
2012-09-13

SOLID STATE PROCESSING OF HAND-HELD KNIFE BLADES TO IMPROVE BLADE PERFORMANCE

#33
20120070686
2012-03-22

Friction stir welding and processing of oxide dispersion strengthened (ODS) alloys

#34
20120009339
2012-01-12

Friction fabrication tools

#35
20110293840
2011-12-01

Systems and methods for fabricating a direct metal deposition structure having fully forged structural qualities

#36
20110278490
2011-11-17

Valves having high wear-resistance and high corrosion-resistance

#37
20110248070
2011-10-13

Method and device for the friction stir welding of two components

#38
20110240374
2011-10-06

Downhole tool having a friction stirred surface region

#39
20110132970
2011-06-09

Friction stir method

#40
20110076419
2011-03-31

METHOD FOR DEVELOPING FINE GRAINED, THERMALLY STABLE METALLIC MATERIAL

#41
20110062219
2011-03-17

Reinforcement of friction plug welds

#42
20100285207
2010-11-11

Friction stir fabrication

#43
20100071961
2010-03-25

BIT LEG OUTER SURFACE PROCESSING USING FRICTION STIR WELDING (FSW)

#44
20100038408
2010-02-18

METHODS OF TREATING HARDBANDED JOINTS OF PIPE USING FRICTION STIR PROCESSING

#45
20100032413
2010-02-11

Method and device for the crack-free welding, repair welding, or surface welding of materials prone to forming hot cracks

#46
20090258232
2009-10-15

Metal matrix carbon nanotube composite material and method of making same

#47
20090123778
2009-05-14

Friction stir method and a pair of workpieces joined by such method

#48
20080302154
2008-12-11

Stir forming apparatus

#49
20080217380
2008-09-11

Method and apparatus to relieve residual stress or distortion in a heat processed article

#50
20080135405
2008-06-12

Metal Double-Layer Structure and Method For Manufacturing the Same and Regeneration Method of Sputtering Target Employing That Method

#51
20080041921
2008-02-21

Friction stir fabrication

#52
20070241164
2007-10-18

Perforated composites for joining of metallic and composite materials

#53
20070173554
2007-07-26

Method of manufacturing polystyrene foam with polymer processing additives

#54
20070051444
2007-03-08

Method for locally surface-modifying of aluminum alloy sheet to improve formability thereof

#55
20070040006
2007-02-22

Method for forming materials

#56
20060283918
2006-12-21

Use of friction stir processing and friction stir welding for nitinol medical devices

#57
20060273140
2006-12-07

Rotatable multi-pin apparatus, and process for friction driven stitch welding and structural modification of materials

#58
20060260376
2006-11-23

Tubular metal body, method of producing same, liner for pressure vessel and method of producing same

#59
20060124701
2006-06-15

Friction stir processing for surface properties

#60
20060054655
2006-03-16

Selective reinforcement of metallic bodies

#61
20060049234
2006-03-09

Friction stirring and its application to drill bits, oil field and mining tools, and components in other industrial applications

#62
20060032333
2006-02-16

Solid state processing of industrial blades, edges and cutting elements

#63
20060013645
2006-01-19

Welding method

#64
20050252341
2005-11-17

Solid state processing of hand-held knife blades to improve blade performance

#65
20050070374
2005-03-31

Enhanced golf club performance via friction stir processing

#66
20050035179
2005-02-17

Stir forming apparatus and method