ClassID:

120480

C23C22/40 - 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 molybdates, tungstates or vanadates

Sub-classes:
Recent Application in this class:
#1
20250236955
2025-07-24

CHEMICALLY ANCHORED MOLD COMPOUNDS IN SEMICONDUCTOR PACKAGES

#2
20250084536
2025-03-13

CHEMICAL TREATMENT LIQUID AND METHOD FOR CHEMICAL TREATMENT OF TARGET METAL MATERIAL

#3
20230272536
2023-08-31

Chemically anchored mold compounds in semiconductor packages

#4
20230107608
2023-04-06

CONVERSION COATING FOR CANS CONTAINING HYDROGEN SULFIDE PRODUCING LIQUIDS

#5
20220261646
2022-08-18

Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor

#6
20220134301
2022-05-05

PH-SENSITIVE CAPSULE AND RELEASE SYSTEM

#7
20210388504
2021-12-16

Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same

#8
20200399750
2020-12-24

Zinc-based plated steel sheet having post-treated coating formed thereon

#9
20200276610
2020-09-03

Passivation composition comprising a silane-modified silicate compound

#10
20190264334
2019-08-29

Surface-treatment solution composition containing trivalent chromium and inorganic compound, zinc-based plated steel sheet surface-treated using same, and method for producing same

#11
20190264333
2019-08-29

Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor

#12
20190186021
2019-06-20

Surface CTS anti-corrosion treatment method for stainless steel part

#13
20180363119
2018-12-20

ZINC-BASED PLATED STEEL SHEET HAVING POST-TREATED COATING FORMED THEREON AND POST-TREATMENT METHOD THEREFOR

#14
20180347051
2018-12-06

Chromium-free surface-treated tinplate, production method and surface treating agent therefor

#15
20180305802
2018-10-25

Surface-treated steel material

#16
20180079174
2018-03-22

Hot-dip zinc-based plated steel sheet

#17
20180073152
2018-03-15

Method for corrosion inhibiting additive

#18
20170348730
2017-12-07

Passivation composition comprising a silane-modified silicate compound

#19
20170240796
2017-08-24

Corrosion inhibition

#20
20170226644
2017-08-10

Corrosion-resistant trivalent-chromium chemical conversion coating and solution for trivalent-chromium chemical treatment

#21
20170096573
2017-04-06

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

#22
20170009363
2017-01-12

Reactive-type chemical conversion treatment composition and production method of member with chemical conversion coated surface

#23
20160237285
2016-08-18

Non-phosphorus chemical conversion treatment agent and treatment liquid for plastic working, chemical conversion film, and metal material with chemical conversion film

#24
20160208391
2016-07-21

Treatment liquid for trivalent chromium conversion coating and treatment method of metal substrate

#25
20160208390
2016-07-21

Treatment liquid for black trivalent chromium conversion coating, trivalent chromium-containing water-soluble liquid for finishing treatment, and treatment method of metal substrate

#26
20160060765
2016-03-03

Surface processing method for aluminum heat exchanger

#27
20160040298
2016-02-11

Chemical conversion agent and metal surface treatment method

#28
20150344702
2015-12-03

Surface treatment composition for galvanized steel sheet, surface treatment method for galvanized steel sheet, and galvanised steel sheet

#29
20130302637
2013-11-14

Zinc-based metal coated steel sheet

#30
20130273389
2013-10-17

Hot-dip galvanized steel sheet and method for producing the same

#31
20130177779
2013-07-11

Method for manufacturing zinc or zinc alloy coated steel sheet and zinc or zinc alloy coated steel sheet manufactured by the method

#32
20130084453
2013-04-04

Surface treatment agent for zinc or zinc alloy coated steel sheet, zinc or zinc alloy coated steel sheet, and method of producing the steel sheet

#33
20120128885
2012-05-24

CORROSION-RESISTANT MULTILAYER VARNISH AND METHOD FOR THE PRODUCTION THEREOF

#34
20120114957
2012-05-10

Surface-treatment agent, method for producing coated steel sheet using the surface-treatment agent, and coated steel sheet

#35
20120018053
2012-01-26

COMPOSITION FOR CHEMICAL CONVERSION TREATMENT, AND PROCESS FOR PRODUCING A MEMBER HAVING AN ANTICORROSIVE FILM FORMED FROM THE COMPOSITION

#36
20110236581
2011-09-29

Treatment solution for insulation coating for grain-oriented electrical steel sheets and method for producing grain-oriented electrical steel sheet having insulation coating

#37
20110151126
2011-06-23

TRIVALENT CHROMIUM CONVERSION COATING

#38
20110041958
2011-02-24

Chromium-free solution for treating metal surfaces

#39
20100297354
2010-11-25

COMPOSITIONS AND METHODS FOR DARKENING AND IMPARTING CORROSION-RESISTANT PROPERTIES TO ZINC OR OTHER ACTIVE METALS

#40
20100273013
2010-10-28

Chrome-free composition of low temperature curing for treating a metal surface and a metal sheet using the same

#41
20100203327
2010-08-12

Corrosion-resistant trivalent-chromium chemical conversion coating and solution for trivalent-chromium chemical treatment

#42
20100098842
2010-04-22

PROCESS FOR CORROSION-PROOFING METALLIC SUBSTRATES

#43
20100009083
2010-01-14

Chromium-free conversion coating

#44
20090123656
2009-05-14

Composition and method for controlling galvanic corrosion in printed circuit boards

#45
20090032145
2009-02-05

Method of forming a multilayer, corrosion-resistant finish

#46
20090004486
2009-01-01

CORROSION INHIBITING ADDITIVE

#47
20080264900
2008-10-30

Metal surface treatment composition

#48
20080254315
2008-10-16

Chromium-free solution for treating metal surfaces

#49
20080193662
2008-08-14

Corrosion-protection agent forming a layer of paint and method for current-free application thereof

#50
20080141900
2008-06-19

Chrome-free passivating solution

#51
20060283622
2006-12-21

Electric wire having a core of aluminum or aluminum alloy

#52
20060213389
2006-09-28

Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals

#53
20050121330
2005-06-09

Chromium-free antitarnish adhesion promoting treatment composition

#54
20050048298
2005-03-03

Chromium-free antitarnish adhesion promoting treatment composition

#55
13656963
2016-01-05

Chemical conversion coating for protecting magnesium alloys from corrosion