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IPC Subgroup
B01J 21/06

Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof

Introduced: July 1974

Last revised: January 2006

Full Title

Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium > Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Subclass:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

1 direct subcode

Child Classifications

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