ClassID:

120488

C23C22/52 - CPC Classification

Classification description:

Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates Treatment of copper or alloys based thereon

Recent Application in this class:
#1
20250263842
2025-08-21

AQUEOUS SURFACE TREATMENT AGENT AND SURFACE-TREATED METAL

#2
20250244244
2025-07-31

PREPARATION METHOD AND USE OF SURFACE-ENHANCED RAMAN SPECTROSCOPY (SERS) SUBSTRATE WITH SELF-CONFINED NANOSILVER GAPS

#3
20250215572
2025-07-03

SURFACE TREATMENT AGENT FOR COPPER OR COPPER ALLOY

#4
20230269879
2023-08-24

Ceramic-cladded copper plate and method for manufacturing ceramic-cladded copper plate

#5
20230143193
2023-05-11

LAMINATE, METAL PLATING SOLUTION, AND MANUFACTURING PROCESS OF LAMINATE

#6
20220306656
2022-09-29

Metal surface treatment liquid and liquid concentrate thereof, metal surface treatment liquid set, metal surface treatment method, and method for manufacturing printed wiring board

#7
20220064802
2022-03-03

Home appliance metal materials chemically resistant to peroxide degradation

#8
20210388505
2021-12-16

Fastener member

#9
20210285108
2021-09-16

COPPER OR COPPER ALLOY ARTICLE COMPRISING SURFACE-MODIFIED POLYESTER-BASED RESIN AND MANUFACTURING METHOD

#10
20210251085
2021-08-12

Method for increasing adhesion strength between a surface of copper or copper alloy and an organic layer

#11
20210162700
2021-06-03

Patinated or patina-ready metal transaction cards and manufacturing processes

#12
20200332431
2020-10-22

Composite copper foil

#13
20200325583
2020-10-15

Method for Producing Film Formation Substrate, Film Formation Substrate, and Surface Treatment Agent

#14
20200263308
2020-08-20

Microetching agent for copper, copper surface roughening method and wiring board production method

#15
20200123665
2020-04-23

BONDING SUBSTRATE AND METHOD FOR PROTECTING SURFACES INTENDED FOR WIRE BONDING

#16
20200024743
2020-01-23

Acid zinc sulfate metal pretreatment

#17
20190078213
2019-03-14

Copper or copper alloy article comprising surface-modified polyester-based resin and manufacturing method

#18
20180312978
2018-11-01

SURFACE TREATMENT AGENT FOR COPPER AND COPPER ALLOY SURFACES AND METHOD FOR TREATING COPPER OR COPPER ALLOY SURFACES

#19
20180207903
2018-07-26

Patinated or patina-ready metal transaction cards and manufacturing process

#20
20180198152
2018-07-12

Conducting member for fuel cells, fuel cell, fuel cell stack, and method of producing conducting member for fuel cells

#21
20180139848
2018-05-17

Production method for copper-clad laminate plate

#22
20180079176
2018-03-22

Electromagnetic shielding material

#23
20170081523
2017-03-23

Treated article and method of making the same

#24
20170073818
2017-03-16

Composition for blackening copper-based or silver-based metals

#25
20170064823
2017-03-02

Surface treating composition for copper and copper alloy and utilization thereof

#26
20140311778
2014-10-23

Method of treating wiring substrate and wiring substrate manufactured by the same

#27
20140174322
2014-06-26

Organic solderability preservative and method

#28
20140131080
2014-05-15

Surface treating composition for copper and copper alloy and utilization thereof

#29
20140097231
2014-04-10

Surface treating composition for copper and copper alloy and utilization thereof

#30
20140030425
2014-01-30

Adhesion promotion in printed circuit boards

#31
20130078367
2013-03-28

Adhesion promotion in printed circuit boards

#32
20130048598
2013-02-28

Plating method of circuit substrate, production method of plated circuit substrate, and silver etching liquid

#33
20120260821
2012-10-18

Coating-forming liquid composition and coating-forming method therewith

#34
20120205010
2012-08-16

CORROSION CONTROL METHOD OF METAL

#35
20120199385
2012-08-09

Phenylnaphthylimidazole compound and usage of the same

#36
20110045203
2011-02-24

PROCESS FOR INHIBITING OXIDE FORMATION ON COPPER SURFACES

#37
20100323099
2010-12-23

Non-etching non-resist adhesion composition and method of preparing a work piece

#38
20100282393
2010-11-11

Process for improving adhesion of polymeric materials to metal surfaces

#39
20100243301
2010-09-30

Organic polymer coating for protection against creep corrosion

#40
20100139959
2010-06-10

Method for manufacturing a printed circuit board and a printed circuit board obtained by the manufacturing method

#41
20090120534
2009-05-14

Preflux Composition

#42
20080264900
2008-10-30

Metal surface treatment composition

#43
20080163787
2008-07-10

Organic solderability preservative comprising high boiling temperature alcohol

#44
20080000552
2008-01-03

Process for increasing the adhesion of a metal surface to a polymer

#45
20070246134
2007-10-25

Phenylnaphthylimidazole compound and usage of the same

#46
20070228333
2007-10-04

Adhesion promotion in printed circuit boards

#47
20070227625
2007-10-04

Adhesion promotion in printed circuit boards

#48
20070113930
2007-05-24

Imidazole compound and use thereof

#49
20060226115
2006-10-12

Composition and method for preparing chemically-resistant roughened copper surfaces for bonding to substrates

#50
20060191869
2006-08-31

Method for roughening copper surfaces for bonding to substrates

#51
20060147734
2006-07-06

Aqueous coating solutions and method for the treatment of a metal surface

#52
20060065365
2006-03-30

Melamine-formaldehyde post-dip composition for improving adhesion of metal to polymer

#53
20050238811
2005-10-27

Composition and method for preparing chemically-resistant roughened copper surfaces for bonding to substrates

#54
20050170077
2005-08-04

Adhesion method

#55
20050061202
2005-03-24

Surface treatment agent for copper and copper alloy

#56
20050011400
2005-01-20

Adhesion promotion in printed circuit boards