DIFF Subgroup
B01J 20/12 Naturally occurring clays or bleaching earth
Introduced: January 1980
Full Title
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof > comprising inorganic material > comprising silica or silicate > Naturally occurring clays or bleaching earth
No child classifications to compare. This is a leaf node in both IPC and CPC.