A method is provided for producing a highly porous substrate. More particularly, the present invention enables fibers, such as organic, inorganic, glass, ceramic, polymer, or metal fibers, to be combined with binders and additives, and extruded, to form a porous substrate. Depending on the selection...http://www.google.fr/patents/US7486962?utm_source=gb-gplus-shareBrevet US7486962 - Extruded porous substrate having inorganic bonds
