IPC Subgroup
C01B 33/113 Silicon oxides; Hydrates thereof
Introduced: January 1980
Last revised: January 2006
Full Title
Silicon; Compounds thereof > Silicon oxides; Hydrates thereof
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- C01B 33/12 Silica; Hydrates thereof, e.g. lepidoic silicic acid