DIFF Subgroup
B22C 1/12 for manufacturing permanent moulds or cores
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds > characterised by additives for special purposes, e.g. indicators, breakdown additives > for manufacturing permanent moulds or cores
CPC:
Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds > characterised by additives for special purposes, e.g. indicators, breakdown additives > for manufacturing permanent moulds or cores
No child classifications to compare. This is a leaf node in both IPC and CPC.