E01B 9/02 Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
Introduced: September 1968
Last revised: January 2006
Full Title
Fastening rails on sleepers, or the like > Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
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
Filing statistics
IPC E01B 9/02 belongs to the parent subclass E01B, which recorded 41,210 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,291 in 2013 to 3,847 in 2023 (+68%), peaking at 5,247 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
5 direct subcodes
Child Classifications
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- E01B 9/04 Fastening on wooden or concrete sleepers or on masonry without clamp members
- E01B 9/22 Fastening on steel sleepers without clamp members
- E01B 9/28 Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B 9/32 Fastening on steel sleepers with clamp members
- E01B 9/36 Metal sole-plates for rails which rails are directly fastened to sleepers
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