CPC Subgroup
E01H 4/023 Full Title
Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow (production of artificial snow F25C3/04) > for sporting purposes, e.g. preparation of ski trails; , e.g. devices adapted for ski-trails (production of snow or ice for winter sports or similar recreational purposes F25C3/00)
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