DIFF Subgroup
C09K 21/02 Inorganic materials
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Fireproofing materials > Inorganic materials
CPC:
Fireproofing materials (for use in a particular application, see the relevant places, e.g. fireproofing of wood B27K, of polymers C08, of textiles D06M, of paper D21H; fireproof paints C09D5/18) > Inorganic materials
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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