C21D2251/04 - CPC Classification Index

#1

20260008119

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

20250019789

2025-01-16

METHOD FOR MANUFACTURING A DOUBLE-LAYERED HEAT EXCHANGE WALL

#3

20210323085

2021-10-21

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

#4

20190299322

2019-10-03

Method of producing endless metal ring

#5

20190160603

2019-05-30

Chromium free and low-chromium wear resistant alloys

#6

20190047085

2019-02-14

Apparatus for laser materials processing

#7

20180187282

2018-07-05

Method of heat treatment

#8

20180104770

2018-04-19

Apparatus for laser materials processing

#9

20180082773

2018-03-22

Method for producing an electric strip laminate wound as a coil

#10

20170216950

2017-08-03

Machine component and method for producing the same

#11

20170143455

2017-05-25

Magnet assembly for dental magnetic attachment

#12

20170121798

2017-05-04

Layered construction of in-situ metal matrix composites

#13

20160305194

2016-10-20

Heat treated heavy weight drill pipe

#14

20160250712

2016-09-01

Processes for producing and treating thin-films composed of nanomaterials

#15

20160244856

2016-08-25

Slide rings having a ledeburitic microstructure at the surface

#16

20150083694

2015-03-26

Weld electrode for attractive weld appearance

#17

20150060422

2015-03-05

Apparatus for laser materials processing

#18

20150017476

2015-01-15

BASE METAL FOR HIGH-TOUGHNESS CLAD PLATE HAVING EXCELLENT TOUGHNESS AT WELDED JOINT AND METHOD OF MANUFACTURING THE CLAD PLATE

#19

20140169863

2014-06-19

Surface contouring of a weld cap and adjacent base metal using ultrasonic impact treatment

#20

20130263796

2013-10-10

High-temperature piping product and method for producing same

#21

20130224516

2013-08-29

Coating compositions, applications thereof, and methods of forming

#22

20130192441

2013-08-01

Machine blade for food processing

#23

20130092279

2013-04-18

COILED TUBING WITH IMPROVED FATIGUE RESISTANCE AND METHOD OF MANUFACTURE

#24

20120288399

2012-11-15

High-hardness hardfacing alloy powder

#25

20120282480

2012-11-08

HIGH-TEMPERATURE MATERIAL TRANSFERRING MEMBER

#26

20120118426

2012-05-17

COILED TUBING WITH IMPROVED FATIGUE RESISTANCE AND METHOD OF MANUFACTURE

#27

20120103950

2012-05-03

Welding method and component

#28

20110278490

2011-11-17

Valves having high wear-resistance and high corrosion-resistance

#29

20110248071

2011-10-13

Austenitic welding material, and preventive maintenance method for stress corrosion cracking and preventive maintenance method for intergranular corrosion, using same

#30

20110174784

2011-07-21

METHOD FOR GAS-SHIELDED ARC BRAZING OF STEEL SHEET

#31

20110076419

2011-03-31

METHOD FOR DEVELOPING FINE GRAINED, THERMALLY STABLE METALLIC MATERIAL

#32

20090314758

2009-12-24

Methods of treating metal articles and articles made therefrom

#33

20090263053

2009-10-22

Plain bearing composite material, use thereof and production methods therefor

#34

20090255908

2009-10-15

Weld electrode for attractive weld appearance

#35

20090053550

2009-02-26

Textured substrate for epitaxial film formation and surface improving method of textured substrate for epitaxial film formation

#36

20080105341

2008-05-08

HEAT TREATMENT OF INLAID PRESSURE VESSELS

#37

20080105340

2008-05-08

Heat Treatment Method of Inlaid Pressure Vessels