CPC Subgroup
E01B 9/44 Fastening the rail on the tie-plate
Full Title
Fastening rails on sleepers, or the like (fastening rails to bridges E01D19/12) > Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs > Fastening the rail on the tie-plate
2 direct subcodes
Child Classifications
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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