ClassID:

120472

C23C22/361 - 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 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds

Recent Application in this class:
#1
20260146333
2026-05-28

SURFACE-TREATED STEEL SHEET AND METHOD OF PRODUCING SAME

#2
20250051591
2025-02-13

ALUMINUM HEAT EXCHANGER

#3
20230399750
2023-12-14

SURFACE-TREATED METAL SHEET

#4
20230107608
2023-04-06

CONVERSION COATING FOR CANS CONTAINING HYDROGEN SULFIDE PRODUCING LIQUIDS

#5
20210355584
2021-11-18

Method for treating surfaces of aluminum containing substrates

#6
20210292907
2021-09-23

Pretreatment Composition

#7
20210254219
2021-08-19

PASSIVATION COMPOSITION BASED ON MIXTURES OF PHOSPHORIC AND PHOSPHONIC ACIDS

#8
20210040621
2021-02-11

Systems and Methods for Treating a Metal Substrate

#9
20200399765
2020-12-24

Sn-plated steel sheet and method for manufacturing Sn-plated steel sheet

#10
20200248313
2020-08-06

Two-step pretreatment system and method

#11
20200181778
2020-06-11

Composition for coating of metallic surfaces with good adhesion, in particular aluminum materials

#12
20200123661
2020-04-23

CHEMICAL TREATMENT STEEL SHEET AND METHOD FOR MANUFACTURING CHEMICAL TREATMENT STEEL SHEET

#13
20200063267
2020-02-27

Composition and method for the chromium-free pretreatment of aluminium surfaces

#14
20190330744
2019-10-31

Process for the manufacturing of a steel strip for packaging and associated equipment

#15
20190226112
2019-07-25

CHEMICAL TREATMENT STEEL SHEET, AND METHOD FOR PRODUCING CHEMICAL TREATMENT STEEL SHEET

#16
20190032222
2019-01-31

SHEET STEEL WITH A CONVERSION COATING, METHOD OF PRODUCING CONVERSION-COATED SHEET STEEL AND TREATMENT AGENT FOR APPLICATION OF A CONVERSION COATING ON SHEET STEEL

#17
20180057946
2018-03-01

Conversion coating and method of making

#18
20170361571
2017-12-21

Steel sheet for a fuel tank

#19
20170314137
2017-11-02

PROCESS FOR COATING METALLIC SURFACES WITH A PASSIVATING AGENT, THE PASSIVATING AGENT AND ITS USE

#20
20170283652
2017-10-05

CAN PRETREATMENT FOR IMPROVED COATING ADHESION

#21
20170260614
2017-09-14

Method of producing hot-dip Zn alloy-plated steel sheet

#22
20170253984
2017-09-07

Chemical treatment steel sheet, and method for producing chemical treatment steel sheet

#23
20170159185
2017-06-08

Chemical treatment steel sheet, and method for producing chemical treatment steel sheet

#24
20170107626
2017-04-20

Process for the manufacturing of a steel strip for packaging and associated equipment

#25
20170096573
2017-04-06

Chemical conversion-treated steel sheet and method for producing same, and chemical conversion treatment solution

#26
20170051412
2017-02-23

Can pretreatment for improved coat adhesion

#27
20170009351
2017-01-12

Method for Coating Metal Surfaces, Substrates Coated in This Way, and Use Thereof

#28
20160289841
2016-10-06

Method of manufacturing a steel sheet for containers

#29
20160160356
2016-06-09

Processes for producing a multilayer coating

#30
20160152838
2016-06-02

Metal pretreatment with acidic aqueous compositions comprising silanes

#31
20160152837
2016-06-02

Metal pretreatment compositions comprising silanes and organophosporus acids

#32
20160152371
2016-06-02

Resin-coated seamless aluminum can

#33
20160040297
2016-02-11

Chemical conversion coated plated steel sheet and method for producing same

#34
20160014929
2016-01-14

Aluminum heat exchanger

#35
20150252480
2015-09-10

Chromium-free conversion coating

#36
20150232698
2015-08-20

Can pretreatment for improved coating adhesion

#37
20150211140
2015-07-30

Composition for Metal Surface Treatment, Metal Surface Treatment Method, and Metal Material

#38
20150167192
2015-06-18

STEEL SHEET FOR CONTAINER AND METHOD OF MANUFACTURING THE SAME

#39
20150086720
2015-03-26

Steel sheet for container having excellent organic film performance and process for producing the same

#40
20140305803
2014-10-16

Pretreatment compositions and methods for coating a metal substrate

#41
20130313888
2013-11-28

Method for coating aluminum wheel, and aluminum wheel

#42
20130284049
2013-10-31

Inorganic chromium-free metal surface treatment agent

#43
20130216858
2013-08-22

Steel sheet for containers and manufacturing method for same

#44
20130213896
2013-08-22

Methods for treating a ferrous metal substrate

#45
20130206285
2013-08-15

Manufacturing method for steel sheets for containers

#46
20130160898
2013-06-27

Chemical conversion coated plated steel sheet and method for producing same

#47
20130157076
2013-06-20

Chemical conversion coated plated steel sheet and method for producing same

#48
20130034745
2013-02-07

STEEL SHEET FOR CONTAINER AND METHOD OF MANUFACTURING THE SAME

#49
20130011694
2013-01-10

Steel sheet for container excellent in corrosion resistance

#50
20120288634
2012-11-15

Anti-corrosion treatment method for aluminum heat exchanger

#51
20120183806
2012-07-19

Pretreatment Compositions and Methods For Coating A Metal Substrate

#52
20120183753
2012-07-19

Steel sheet for container having excellent organic film performance and process for producing the same

#53
20120171380
2012-07-05

Pre-conversion coating composition

#54
20120076940
2012-03-29

Methods for treating a ferrous metal substrate

#55
20110281120
2011-11-17

Paint adhesion by polyvinyl amines in acidic aqueous corrosion protection product containing polymers

#56
20110189401
2011-08-04

Successive corrosion-protecting pre-treatment of metal surfaces in a multiple-step process

#57
20110008645
2011-01-13

PROCESS FOR COATING METALLIC SURFACES WITH A PASSIVATING AGENT, THE PASSIVATING AGENT AND ITS USE

#58
20100316888
2010-12-16

PRE-CONVERSION COATING COMPOSITION

#59
20100293788
2010-11-25

Zirconium phosphating of metal components, in particular iron

#60
20100243465
2010-09-30

Method of producing surface-treated metal material and method of producing coated metal item

#61
20100068555
2010-03-18

CORROSION PROTECTIVE LAYER WITH IMPROVED CHARACTERISTICS

#62
20090266450
2009-10-29

Trichrome passivates for treating galvanized steel

#63
20090239093
2009-09-24

Composition for metal surface treatment, metal surface treatment method and metal material

#64
20090226745
2009-09-10

Easy-open end

#65
20090220714
2009-09-03

Resin-coated seamless aluminum can and resin-coated aluminum alloy lid

#66
20090084471
2009-04-02

Methods for treating a ferrous metal substrate

#67
20090032144
2009-02-05

Pretreatment compositions and methods for coating a metal substrate

#68
20090032140
2009-02-05

NOVEL NON-CHROME METAL TREATMENT COMPOSITION

#69
20080223490
2008-09-18

Non-chrome passivation of steel

#70
20080127859
2008-06-05

Method for Coating Metallic Surfaces with an Aqueous Multi-Component Composition

#71
20080026233
2008-01-31

Process for coating metal sheet, especially zinc sheet

#72
20070298174
2007-12-27

Method for coating metallic surfaces with an aqueous composition

#73
20070231496
2007-10-04

Method for coating of metallic coil or sheets for producing hollow articles

#74
20070163761
2007-07-19

Heat exchanger and method for manufacturing the same

#75
20070125451
2007-06-07

STABLE, THIN-FILM ORGANIC PASSIVATES

#76
20070017603
2007-01-25

Functionalized phenol-formaldehyde resin and method for treating metallic surfaces

#77
20060169363
2006-08-03

Stable, non-chrome, thin-film organic passivates

#78
20060090818
2006-05-04

Non-chrome metal treatment composition

#79
20060042726
2006-03-02

Non-chrome passivation of steel

#80
20060027629
2006-02-09

Surface treatment method for flux-brazed aluminum-made heat exchanger

#81
20060013986
2006-01-19

Article of manufacture and process for anodically coating an aluminum substrate with ceramic oxides prior to organic or inorganic coating

#82
20050252578
2005-11-17

Process for production of a metal substrate containing a protective coating

#83
20050106403
2005-05-19

Shaped metal article and method of producing shaped metal article having oxide coating

#84
20050072495
2005-04-07

Passivation composition and process for zinciferous and aluminiferous surfaces

#85
20050022907
2005-02-03

Universal aqueous coating compositions for pretreating metal surfaces