CPC Main Group Additional Only
E01B 2203/00 Devices for working the railway-superstructure
12 direct subcodes
Child Classifications
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- E01B 2203/01 with track
- E01B 2203/02 Removing or re-contouring ballast
- E01B 2203/03 Displacing or storing ballast
- E01B 2203/04 Cleaning or reconditioning ballast or ground beneath
- E01B 2203/06 Placing ballast
- E01B 2203/08 Levelling ballast or ground beneath
- E01B 2203/10 Track-lifting or-lining devices or methods
- E01B 2203/12 Tamping devices
- E01B 2203/14 Way of locomotion or support
- E01B 2203/15 Reducing impact of devices on environment
- E01B 2203/16 Guiding or measuring means, e.g. for alignment, canting, stepwise propagation
- E01B 2203/17 continually advancing
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