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IPC Subgroup
E01C 7/18

of road-metal and bituminous binders

Introduced: September 1968

Last revised: January 2006

Full Title

Coherent pavings made > made of road-metal and binders > of road-metal and bituminous binders

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

Related Keywords

paving material of road-metal and bitumenous binders

4 direct subcodes

Child Classifications

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  • E01C 7/2 Binder incorporated in cold state, e.g. natural asphalt
  • E01C 7/22 Binder incorporated in hot state, e.g. heated bitumen
  • E01C 7/24 Binder incorporated as an emulsion or solution
  • E01C 7/26 mixed with other materials, e.g. cement, rubber, leather, fibre

Top Applicants

Top 10 applicants by patent filingsfor class E01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 2,096
  2. CHANG AN UNIVERSITY 1,878
  3. ROAD & BRIDGE INTERNATIONAL COMPANY 1,796
  4. CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 1,493
  5. CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 1,327
  6. CCCC FIRST HIGHWAY ENGINEERING GROUP COMPANY 1,133
  7. CCCC SECOND HARBOUR ENGINEERING COMPANY 1,029
  8. PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 935
  9. TONGJI UNIVERSITY 899
  10. CATERPILLAR PAVING PRODUCTS US 868