ClassID:

120473

C23C22/362 - 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 also zinc cations

Recent Application in this class:
#1
20250354269
2025-11-20

MULTI-STAGE TREATMENT FOR ACTIVATED ZINC PHOSPHATING OF METALLIC COMPONENTS

#2
20230220559
2023-07-13

ONE-STAGE PROCESS FOR ZINC PHOSPHATING

#3
20190127854
2019-05-02

Method for nickel-free phosphating metal surfaces

#4
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

#5
20180334748
2018-11-22

METHOD FOR SPECIFICALLY ADJUSTING THE ELECTRICAL CONDUCTIVITY OF CONVERSION COATINGS

#6
20180112314
2018-04-26

Method for specifically adjusting the electrical conductivity of conversion coatings

#7
20180112313
2018-04-26

Method for nickel-free phosphating metal surfaces

#8
20170314137
2017-11-02

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

#9
20150176135
2015-06-25

DRY-IN-PLACE CORROSION-RESISTANT COATING FOR ZINC OR ZINC-ALLOY COATED SUBSTRATES

#10
20140305903
2014-10-16

Method for manufacturing a bonded body of galvanized steel sheet and adherend

#11
20130202797
2013-08-08

Method for selectively phosphating a composite metal construction

#12
20130078382
2013-03-28

Process for forming corrosion protection layers on metal surfaces

#13
20120171380
2012-07-05

Pre-conversion coating composition

#14
20110305840
2011-12-15

CHEMICAL CONVERSION TREATMENT LIQUID FOR METALLIC MATERIAL AND PROCESS FOR TREATMENT

#15
20110206844
2011-08-25

CHROMIUM-FREE PASSIVATION OF VAPOR DEPOSITED ALUMINUM SURFACES

#16
20110198000
2011-08-18

Process for coating metallic surfaces

#17
20110008645
2011-01-13

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

#18
20110008644
2011-01-13

BONDED BODY OF GALVANIZED STEEL SHEET AND ADHEREND, AND MANUFACTURING METHOD THEREOF

#19
20100316888
2010-12-16

PRE-CONVERSION COATING COMPOSITION

#20
20100203237
2010-08-12

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

#21
20100028541
2010-02-04

Surface treatment liquid for zinc-based metal material and method for surface-treating zinc-based metal material

#22
20090169903
2009-07-02

PROCESS FOR PRODUCING METAL SUBSTRATE WITH MULTILAYER FILM, METAL SUBSTRATE WITH MULTILAYER FILM OBTAINED BY THE PROCESS, AND COATED ARTICLE

#23
20080038476
2008-02-14

Process for improving the adhesion of polymeric materials to metal surfaces

#24
20050205166
2005-09-22

Method for coating metallic surfaces

#25
20050113559
2005-05-26

Conducting polymer for pretreatment of metallic and non-metallic surfaces