DIFF Main Group
E01C 11/00 Details of pavings
Introduced: September 1968
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E01C 11/02 Arrangement or construction of joints ; Methods of making joints ; Packing for joints (sealing joints not restricted to road or airfield paving E04B1/68) IPC+CPC Available in IPC and CPC
- E01C 11/22 Gutters; Kerbs (kerbs specially adapted for alerting road users E01F9/535) +2 CPC IPC+CPC Available in IPC and CPC
- E01C 11/24 Methods or arrangements for preventing slipperiness or protecting against influences of the weather +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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