C CHEMISTRY; METALLURGY
C04 CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
C04B LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
2235/00 Aspects relating to ceramic starting mixtures or sintered ceramic products
C04B2235/02 Composition of constituents of the starting material or of secondary phases of the final product
C04B2235/50 Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
C04B2235/54 Particle size related information
C04B2235/5418 expressed by the size of the particles or aggregates thereof
C04B2235/5445 submicron sized, i.e. from 0,1 to 1 micron