E01B 31/20 Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting (working metal sleepers E01B31/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
CPC: Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting (working metal sleepers E01B31/02)
Full Title
Full titles differ between systems:
Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor > Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor (characterised by features independent of use on assembled track B21, B23 - B25, B27) > Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting (working metal sleepers E01B31/02)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- E01B 31/22 Cutting or grinding wooden sleepers, e.g. for forming rail seats (E01B31/24 takes precedence) IPC+CPC Available in IPC and CPC
- E01B 31/24 Forming, treating, reconditioning, or cleaning holes in sleepers; Drilling-templates (E01B29/28, E01B31/26 take precedence) IPC+CPC Available in IPC and CPC
- E01B 31/26 Inserting or removing inserts or fillings for holes in sleepers, e.g. plugs, sleeves IPC+CPC Available in IPC and CPC
- E01B 31/28 Applying or removing anti-splitting or like reinforcing means (E01B31/26 takes precedence; straps or bands therefor E01B3/08) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class E01,2013–2023, worldwide · Source: EPO PATSTAT
- PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 998
- CATERPILLAR PAVING PRODUCTS US 937
- CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 869
- WIRTGEN DE 740
- CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 685
- CHANG AN UNIVERSITY 615
- CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 613
- SOUTHEAST UNIVERSITY 562
- TONGJI UNIVERSITY 500
- ROAD & BRIDGE INTERNATIONAL COMPANY 491