Use of materials as fillers for mortars, concrete or artificial stone according

Official title: Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials

C04B20/00 (Use of materials as fillers for mortars, concrete or artificial stone according) appears on 1,873 US grants and 2,040 published applications in this corpus.