CPC Subgroup
E01C 19/12 for distributing granular or liquid materials ( , E01C23/07 take precedence; for filling joints or grooves E01C23/02, E01C23/09)
Full Title
Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving (surface stabilisation E01C21/00; apparatus specially adapted for reconditioning or repairing paving E01C23/00) > for distributing granular or liquid materials ( , E01C23/07 take precedence; for filling joints or grooves E01C23/02, E01C23/09)
5 direct subcodes
Child Classifications
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- E01C 19/15 for laying-down uncoated stone or similar materials, or for striking-off or spreading same without compacting, e.g. for crushed rock base courses, sand cushions for paving ( , E01C19/52 take precedence; distributing E01C19/20; )
- E01C 19/16 for applying or spreading liquid materials, e.g. bitumen slurries ( E01C19/45, E01C23/02, E01C23/03, , E01C23/16 take precedence; )
- E01C 19/18 Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect (E01C19/20, , E01C19/47, take precedence; conveying installations for concrete or the like B65G)
- E01C 19/20 Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders ( fertiliser distributors A01C15/00 )
- E01C 19/21 for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading
Top Applicants
Top 10 applicants by patent filingsfor class E01, 2013–2023, worldwide · Source: EPO PATSTAT
- PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 998
- CATERPILLAR PAVING PRODUCTS US 937
- CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 869
- WIRTGEN DE 740
- CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 685
- CHANG AN UNIVERSITY 615
- CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 613
- SOUTHEAST UNIVERSITY 562
- TONGJI UNIVERSITY 500
- ROAD & BRIDGE INTERNATIONAL COMPANY 491