Details of bridges

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Subclass:: BRIDGES

Filing statistics

IPC E01D 19/00 belongs to the parent subclass E01D, which recorded 128,907 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,299 in 2013 to 17,552 in 2023 (+308%), peaking at 18,786 applications in 2020. The most active applicants in class E01 are CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY (2,096 applications), CHANG AN UNIVERSITY (1,878 applications) and ROAD & BRIDGE INTERNATIONAL COMPANY (1,796 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

TRUSSES forming parts of bridges

8 direct subcodes

Child Classifications

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E01D 19/02 Piers; Abutments
E01D 19/04 Bearings; Hinges
E01D 19/06 Arrangement, construction, or bridging of expansion joints
E01D 19/08 Damp-proof or other insulating layers; Drainage arrangements or devices
E01D 19/1 Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
E01D 19/12 Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
E01D 19/14 Towers; Anchors; Saddle supports
E01D 19/16 Suspension cables; Cable clamps for suspension cables

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