DIFF Subgroup
C12H 1/044 with the aid of inorganic material
Introduced: January 1995
Full Title
Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages > combined with removal of precipitate or added materials, e.g. adsorption material > with the aid of ion-exchange material or inert clarification material, e.g. adsorption material > with the aid of inorganic material
Of 1 combined children, 0 exist in both systems.
1 codes exist only in IPC.
IPC defines codes here since 1995.