Layered products characterised by the non- homogeneity or physical structure , i.e.

Official title: characterised by the presence of two or more layers which {are next to each other and are fibrous, filamentary, formed of particles or foamed (layer formed of natural mineral fibres or particles next to a foam layer B32B19/047, next to a layer made of particles B32B19/048, or next to a fibrous or filamentary layer B32B19/06; paper layer or cardboard layer next to a paper layer or cardboard layer B32B29/005, next to a foam layer B32B29/007, next to a fibrous or filamentary layer B32B29/02, or next to a particulate layer B32B29/04)}

B32B5/22 (Layered products characterised by the non- homogeneity or physical structure , i.e.) appears on 11,320 US grants and 14,904 published applications in this corpus.