Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C01B 13/20

by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general > by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state

CPC:

Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group) > by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

Navigate with arrow keys, Enter to open