89102 ⎘
Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances Preparing or treating the raw materials individually or as batches
Sub-classes:HIGH FILTRATION EFFICIENCY PARTICULATE FILTERS HAVING BIMODAL PORE SIZE DISTRIBUTION MADE FROM BEADS WITH OPEN POROSITY
#2POROUS NON-METALLIC MATERIAL
#3GLASS CERAMIC SCAFFOLDS WITH COMPLEX TOPOGRAPHY
#4Process for producing ceramic molding having three-dimensional network structure