DIFF Subgroup
A23C 1/08 Freeze-drying
Introduced: January 1980
Title
Titles differ between systems:
IPC: Freeze drying
CPC: Freeze-drying
Full Title
Full titles differ between systems:
IPC:
Concentration, evaporation or drying > Concentration by freezing out the water > Freeze drying
CPC:
Concentration, evaporation or drying (products obtained thereby A23C9/00) > Concentration by freezing out the water > Freeze-drying
No child classifications to compare. This is a leaf node in both IPC and CPC.