CPC Subgroup Additional Only
E01B 2203/02 Removing or re-contouring ballast
Full Title
Devices for working the railway-superstructure > Removing or re-contouring ballast
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- E01B 2203/021 Blowing
- E01B 2203/022 Horizontal chain
- E01B 2203/024 Inclined chain
- E01B 2203/025 Suction
- E01B 2203/027 Sweeping
- E01B 2203/028 Alternative ways
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