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DIFF Subgroup
C01B 33/039

by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Silicon; Compounds thereof > Silicon > Purification > by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon

CPC:

Silicon; Compounds thereof ( C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956) > Silicon (forming single crystals or homogeneous polycrystalline material with defined structure C30B) > Purification (by zone-melting C30B13/00) > by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon

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