• All sections
• E - Fixed constructions
• E04C - Structural elementsbuilding materials
• E04C 2/284 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating

Patent holdings for IPC class E04C 2/284

Total number of patents in this class: 254

10-year publication summary

Principal owners for this class