IPC Main Group
E01B 7/00 Switches; Crossings
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- Subclass:
- PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
Related Keywords
CROSSINGS for railwaysrail JUNCTION(S) for railwaysPOINTS for railway tracksSWITCH(ES) for railway tracks [= points]
8 direct subcodes
Child Classifications
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- E01B 7/02 Tongues; Associated constructions
- E01B 7/1 Frogs
- E01B 7/18 Combinations of switches and crossings
- E01B 7/2 Safety means for switches, e.g. switch point protectors, auxiliary or guiding rail members
- E01B 7/22 Special sleepers for switches or crossings; Fastening means therefor
- E01B 7/24 Heating of switches
- E01B 7/26 Lubricating of switches
- E01B 7/28 Crossings
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