IPC Definitions - January 01, 2012
C04B 38/00 - Definition
This main group covers:
Mortars, concrete, artificial stone or ceramic ware which are deliberately made porous, e.g. by adding gas-forming, foaming, lightweight or burnable additives to the compositions they are made of, and the preparation thereof.
References relevant to classification in this main group
This main group does not cover:
Artificial stone compositions containing fibres, and voids which may occur between the intertwined fibres, but no binders | C04B 30/02 |
Attention is drawn to the following places, which may be of interest for search:
Porous or cellular macromolecular materials | C08J 9/00 |
Special rules of classification
Porous mortars, concrete, artificial stone or ceramic ware characterised by the ingredients or compositions are also classified in groups C04B 2/00 to C04B 35/00.