C23C22/37 - CPC Classification Index

ClassID:

120478 ⎘

C23C22/37 - 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 hexavalent chromium compounds

Sub-classes:

C23C22/38 » containing also phosphates 2

Recent Application in this class:

20240141504

CAN STEEL SHEET AND METHOD FOR PRODUCING SAME

20180261850

Copper foil having improved adhesive force, electrode including the same, secondary battery including the same, and method of manufacturing the same

20170241022

Reduction of chromium waste in an aluminum conversion coat processing line

20150040799

Reduction of chromium waste water in an aluminum conversion coat processing line

20110217514

Magnesium alloy member and method of manufacturing the same

20080254221

Coating composition and methods of coating

20060257572

Surface treatment for metal-polymer laminated electrochemical cell package

20050276989

Coating composition and methods of coating

20050233211

Surface treatment for metal-polymer laminated electrochemical cell package

20050129932

Rivet and coating technique