IPC Main Group
E01B 9/00 Fastening rails on sleepers, or the like
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
Filing statistics
IPC E01B 9/00 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
Related Keywords
CHAIRS for rails of railwaysFASTENING rails or railway sleepers
7 direct subcodes
Child Classifications
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- E01B 9/02 Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B 9/38 Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E01B 9/6 Rail fastenings making use of clamps or braces supporting the side or head of the rail
- E01B 9/62 Rail fastenings incorporating resilient supports
- E01B 9/64 Rail fastenings gripping or encircling the sleeper
- E01B 9/66 Rail fastenings allowing the adjustment of the position of the rails, so far as not covered by the preceding groups
- E01B 9/68 Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
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