Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C01B 33/159

Coating or hydrophobisation

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Silicon; Compounds thereof > Silicon oxides; Hydrates thereof > Silica; Hydrates thereof, e.g. lepidoic silicic acid > Colloidal silica, e.g. dispersions, gels, sols > After-treatment of gels > Coating or hydrophobisation

CPC:

Silicon; Compounds thereof ( C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956) > Silicon oxides; Hydrates thereof > Silica; Hydrates thereof, e.g. lepidoic silicic acid > Colloidal silica, e.g. dispersions, gels, sols > After-treatment of gels > Coating or hydrophobisation

No child classifications to compare. This is a leaf node in both IPC and CPC.