IPC Subgroup
C04B 33/02 Preparing or treating the raw materials individually or as batches
Introduced: September 1968
Last revised: January 2006
Full Title
Clay-wares > Preparing or treating the raw materials individually or as batches
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- Subclass:
- LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
4 direct subcodes
Child Classifications
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- C04B 33/04 Clay; Kaolin
- C04B 33/1 Eliminating iron or lime
- C04B 33/13 Compounding ingredients
- C04B 33/2 for dry-pressing