Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Of inorganic materials
Reexamination Certificate
2007-08-21
2007-08-21
Lopez, Carlos (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Of inorganic materials
C264S045100
Reexamination Certificate
active
10307277
ABSTRACT:
A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a perform of polymeric foam material and impregnating the said perform with the ceramic-powder slurry so as to distribute the slurry evenly on the perform, and by then subjecting the body thus obtained to a thermal cycle of sintering in such a way as to pyrolyze the polymeric material and obtain a high-porosity ceramic material. The ceramic-material powder is chosen from among mullite powder, alumina powder, zirconia powder, and mixtures thereof, having very high purity, controlled grain-size, and a high specific surface.
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Boretto Gianmarco
Debenedetti Massimo
Marzorati Diego
CRF Societa Consortile per Azioni
Lopez Carlos
Sughrue & Mion, PLLC
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