IPC Subgroup
E01H 1/1 Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus
Introduced: September 1968
Last revised: January 2006
Full Title
Removing undesirable matter from roads or like surfaces, with or without moistening of the surface > Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- Subclass:
- STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; CLEANING LAND; DISPERSING FOG IN GENERAL
Related Keywords
WASHING of roads
Top Applicants
Top 10 applicants by patent filingsfor 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