ClassID:

120457

C23C22/182 - 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 phosphates; Orthophosphates containing manganese cations containing also zinc cations

Recent Application in this class:
#1
20250171906
2025-05-29

METHOD FOR TREATING A PART MADE OF IRON ALLOY FOR IMPROVING THE ANTI-CORROSION PROPERTIES THEREOF

#2
20220195604
2022-06-23

PHOSPHATE COATING WHICH CAN BE SUBSTANTIALLY FREE OF HEXAVALENT CHROMIUM AND METHODS OF MAKING THE SAME

#3
20210348277
2021-11-11

METHOD FOR NI-FREE PHOSPHATIZING OF METAL SURFACES AND COMPOSITION FOR USE IN SUCH A METHOD

#4
20210340676
2021-11-04

METHOD FOR NI-FREE PHOSPHATIZING OF METAL SURFACES AND COMPOSITION FOR USE IN SUCH A METHOD

#5
20210062344
2021-03-04

Passivation composition based on trivalent chromium

#6
20200040460
2020-02-06

Composition for forming coating, production method for surface-treated metal member, and production method for metal-resin composite

#7
20190127854
2019-05-02

Method for nickel-free phosphating metal surfaces

#8
20180371621
2018-12-27

Treatment solution for chromium-free tension coating, method for forming chromium-free tension coating, and grain oriented electrical steel sheet with chromium-free tension coating

#9
20180371620
2018-12-27

Treatment solution for chromium-free tension coating, method for forming chromium-free tension coating, and grain oriented electrical steel sheet with chromium-free tension coating

#10
20180334748
2018-11-22

METHOD FOR SPECIFICALLY ADJUSTING THE ELECTRICAL CONDUCTIVITY OF CONVERSION COATINGS

#11
20180112314
2018-04-26

Method for specifically adjusting the electrical conductivity of conversion coatings

#12
20180112313
2018-04-26

Method for nickel-free phosphating metal surfaces

#13
20170306498
2017-10-26

ACTIVATING RINSE AND METHOD FOR TREATING A SUBSTRATE

#14
20160305026
2016-10-20

Treatment solution for chromium-free tension coating, method for forming chromium-free tension coating, and grain oriented electrical steel sheet with chromium-free tension coating

#15
20140360630
2014-12-11

Pretreating zinc surfaces prior to a passivating process

#16
20120211123
2012-08-23

Galvannealed steel sheet and producing method thereof

#17
20110180186
2011-07-28

METHOD AND SOLUTION FOR COATING METALLIC SURFACES WITH A PHOSPHATING SOLUTION CONTAINING HYDROGEN PEROXIDE, METALLIC OBJECT PRODUCED AND USE OF THE OBJECT

#18
20110067786
2011-03-24

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

#19
20080314479
2008-12-25

HIGH MANGANESE COBALT-MODIFIED ZINC PHOSPHATE CONVERSION COATING

#20
20060278307
2006-12-14

Method and solution for coating metal surfaces with a posphating solution containing water peroxide, produced metal object and use of said object

#21
20050208224
2005-09-22

Method for applying an anti-corrosion coating to especially corrosion exposed parts in rock drill equipment