C23C22/368 - CPC Classification Index

ClassID:

120477 ⎘

C23C22/368 - 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 magnesium cations

Recent Application in this class:

20210254219

PASSIVATION COMPOSITION BASED ON MIXTURES OF PHOSPHORIC AND PHOSPHONIC ACIDS

20120177826

Method for coating metallic surfaces with an aqueous composition

20110305840

CHEMICAL CONVERSION TREATMENT LIQUID FOR METALLIC MATERIAL AND PROCESS FOR TREATMENT

20110206844

CHROMIUM-FREE PASSIVATION OF VAPOR DEPOSITED ALUMINUM SURFACES

20110189488

Process for coating metallic surfaces with an aqueous composition, and this composition

20100028541

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

20080302448

WET ON WET METHOD AND CHROME-FREE ACIDIC SOLUTION FOR THE CORROSION CONTROL TREATMENT OF STEEL SURFACES

20080138615

Method for Coating Metallic Surfaces with an Aqueous Composition and Said Composition

20060237099

Method for coating metal bodies with a phosphating solution and phosphating solution

20060147735

Chemical conversion treating agent and surface treated metal

20050003226

Chemically processed steel sheet excellent in corrosion resistance