Applications of measuring apparatus or devices for track-building purposes

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

GAUGE(S) for measuring railway tracksLEVELLING rail tracksMEASURING -apparatus for railway track buildingmeasuring-apparatus for RAILWAY(S),RAILROAD(S) track buildingmeasuring-apparatus for railway TRACK(S) building

3 direct subcodes

Child Classifications

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E01B 35/02 for spacing; for cross levelling; for laying-out curves
E01B 35/06 for measuring irregularities in longitudinal direction
E01B 35/12 for measuring movement of the track or of components thereof under rolling loads, e.g. depression of sleepers, increase of gauge

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