CPC Subgroup
C04B 33/02 Preparing or treating the raw materials individually or as batches
Full Title
Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00) > Preparing or treating the raw materials individually or as batches
5 direct subcodes
Child Classifications
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- C04B 33/04 Clay; Kaolin
- C04B 33/10 Eliminating iron or lime
- C04B 33/13 Compounding ingredients (C04B33/36, C04B35/71 take precedence )
- C04B 33/20 for dry-pressing (C04B33/13 takes precedence)