Comprising metal as the main or only constituent of a layer, which

Official title: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}

B32B15/04 (Comprising metal as the main or only constituent of a layer, which) appears on 9,798 US grants and 12,716 published applications in this corpus.