[ Treatment of materials, particularly catalytic treatment of metal substrates ]

Common metals and their alloys, namely, nickel, iron, aluminum, and chromium; Metallic substrates, namely, uncoated alloy foam; Common metals and their alloys, namely, nickel, iron, aluminum, and chromium used in the manufacture of exhaust aftertreatment systems consisting; Metal foams coated with catalytic materials for use in exhaust aftertreatment systems