DIFF Subgroup
C01B 33/22 Magnesium silicates
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Silicon; Compounds thereof > Silicates > Magnesium silicates
CPC:
Silicon; Compounds thereof ( C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956) > Silicates (persilicates C01B15/14 ) > Magnesium silicates
No child classifications to compare. This is a leaf node in both IPC and CPC.