IPC Subgroup
E01C 19/12 for distributing granular or liquid materials
Introduced: September 1968
Last revised: January 2006
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 > for distributing granular or liquid materials
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- Subclass:
- CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
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
- E01C 19/16 for applying or spreading liquid materials, e.g. bitumen slurries
- E01C 19/18 Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C 19/2 Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
- 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
- CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 2,096
- CHANG AN UNIVERSITY 1,878
- ROAD & BRIDGE INTERNATIONAL COMPANY 1,796
- CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 1,493
- CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 1,327
- CCCC FIRST HIGHWAY ENGINEERING GROUP COMPANY 1,133
- CCCC SECOND HARBOUR ENGINEERING COMPANY 1,029
- PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 935
- TONGJI UNIVERSITY 899
- CATERPILLAR PAVING PRODUCTS US 868