E01H 3/04 Fixed devices, e.g. permanently- installed flushing means (; hydrants E03B9/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Fixed devices, e.g. permanently-installed flushing means
CPC: Fixed devices, e.g. permanently- installed flushing means (; hydrants E03B9/00)
Full Title
Full titles differ between systems:
Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices > Fixed devices, e.g. permanently-installed flushing means
Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices (combined with removal of undesirable matter E01H1/00; spray heads, other outlets B05B ) > Fixed devices, e.g. permanently- installed flushing means (; hydrants E03B9/00)
No child classifications to compare. This is a leaf node in both 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