• All sections
• C - Chemistry; metallurgy
• C04B - Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
• C04B 20/00 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials

Patent holdings for IPC class C04B 20/00

Total number of patents in this class: 534

10-year publication summary

Principal owners for this class