IPC Main Group
E01D 15/00 Movable or portable bridges; Floating 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 15/00 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
7 direct subcodes
Child Classifications
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- E01D 15/02 Vertical lift bridges
- E01D 15/04 Swing bridges
- E01D 15/06 Bascule bridges; Roller bascule bridges, e.g. of Scherzer type
- E01D 15/1 Travelling bridges; Sliding bridges; Rotary cylinder bridges, i.e. rotating about longitudinal axis to invert and raise the road
- E01D 15/12 Portable or sectional bridges
- E01D 15/14 Floating bridges, e.g. pontoon bridges
- E01D 15/24 Bridges or similar structures, based on land or on a fixed structure and designed to give access to ships or other floating structures
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