ClassID:

120481

C23C22/42 - 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 containing also phosphates

Recent Application in this class:
#1
20240200197
2024-06-20

ELECTRICALLY INSULATING COATING FOR ANISOTROPIC ELECTRICAL STEEL

#2
20240167164
2024-05-23

SYSTEMS AND METHODS FOR TREATING A SUBSTRATE

#3
20220298364
2022-09-22

Corrosion-Inhibiting Coatings for Metal Mesh Gaskets and Metallic Particles

#4
20220261646
2022-08-18

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

#5
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

#6
20210254219
2021-08-19

PASSIVATION COMPOSITION BASED ON MIXTURES OF PHOSPHORIC AND PHOSPHONIC ACIDS

#7
20210147971
2021-05-20

Steel sheet having a hot-dip Zn—Al—Mg-based coating film excellent in terms of surface appearance and method of manufacturing the same

#8
20200291527
2020-09-17

Solution composition containing trivalent chromium for surface treatment of steel sheet, galvanized steel sheet surface—treated with same, and method for manufacturing galvanized

#9
20200276610
2020-09-03

Passivation composition comprising a silane-modified silicate compound

#10
20200024742
2020-01-23

High-strength cold-rolled steel sheet

#11
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

#12
20190264333
2019-08-29

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

#13
20190186018
2019-06-20

Grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet

#14
20190127860
2019-05-02

Two-step sealing of anodized aluminum coatings

#15
20180305802
2018-10-25

Surface-treated steel material

#16
20180080127
2018-03-22

Insulating-coated oriented magnetic steel sheet and method for manufacturing same

#17
20180002813
2018-01-04

Steel sheet for a fuel tank

#18
20170362732
2017-12-21

Surface treated steel sheet for fuel tank

#19
20170361571
2017-12-21

Steel sheet for a fuel tank

#20
20170348730
2017-12-07

Passivation composition comprising a silane-modified silicate compound

#21
20170167030
2017-06-15

Method for Producing a Sandwich Structure, Sandwich Structure Produce Thereby and Use Thereof

#22
20150344702
2015-12-03

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

#23
20150329972
2015-11-19

Phosphate solution for zinc or zinc-based alloy plated steel sheet, and zinc or zinc-based alloy plated steel sheet using the same

#24
20150292073
2015-10-15

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

#25
20150259776
2015-09-17

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

#26
20150225856
2015-08-13

Method for the manufacture of a substrate provided with a chromium VI-free and cobalt-free passivation

#27
20140261896
2014-09-18

Method for conversion treating surface of magnesium alloy workpiece

#28
20130302637
2013-11-14

Zinc-based metal coated steel sheet

#29
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

#30
20120328786
2012-12-27

METAL SURFACE TREATMENT SOLUTION AND METHOD OF MANUFACTURING STEEL SHEET USING THE SAME

#31
20120270035
2012-10-25

Process for surface treating magnesium alloy and article made with same

#32
20120135267
2012-05-31

Passivant for hot-dip Al-Zn-coated sheet and preparation method and use thereof

#33
20120112862
2012-05-10

Rare earth magnet and method for manufacturing same

#34
20120064316
2012-03-15

Surface-treated metal plate

#35
20110226388
2011-09-22

Chromate-free conversion film solution and the method of applying the solution to magnesium alloys

#36
20100273013
2010-10-28

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

#37
20100203237
2010-08-12

CORROSION PROTECTIVE AND ELECTRICAL CONDUCTIVITY COMPOSITION FREE OF INORGANIC SOLID PARTICLES AND PROCESS FOR THE SURFACE TREATMENT OF METALLIC SHEET

#38
20100154673
2010-06-24

Compositions and processes for deposition of metal ions onto surfaces of conductive substrates

#39
20100068396
2010-03-18

METAL SURFACE TREATMENT SOLUTION AND METHOD OF MANUFACTURING STEEL SHEET USING THE SAME

#40
20090297843
2009-12-03

NON-CHROME THIN ORGANIC-INORGANIC HYBRID COATING ON ZINCIFEROUS METALS

#41
20080302267
2008-12-11

COMPOSITIONS AND PROCESSES FOR DEPOSITION OF METAL IONS ONTO SURFACES OF CONDUCTIVE SUBSTRATES

#42
20080207477
2008-08-28

Gel containing phosphate salts for passivation

#43
20080141900
2008-06-19

Chrome-free passivating solution

#44
20080050581
2008-02-28

Rare Earth Magnet and Method for Manufacturing Same

#45
20060182988
2006-08-17

Surface-treated steel sheet and method for manufacturing the same

#46
20060177685
2006-08-10

Surface-treated steel sheet excellent in corrosion resistance, conductivity, and coating appearance

#47
20050282033
2005-12-22

Black zinc-plated steel sheet

#48
20050147832
2005-07-07

Surface-treated steel sheets of good white rust resistance, and method for producing them