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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
E01B 3/16

made from steel

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails > made from steel

CPC:

Transverse or longitudinal sleepers (for switches or crossings E01B7/22); Other means resting directly on the ballastway for supporting rails > made from steel

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • E01B 3/18 Composite sleepers IPC+CPC Available in IPC and CPC
  • E01B 3/20 Sleeper construction for special purposes, e.g. with openings for ballast working (sleepers for shiftable track for heavy loads E01B23/12) IPC+CPC Available in IPC and CPC
  • E01B 3/22 Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers IPC+CPC Available in IPC and CPC
  • E01B 3/24 Slabs; Blocks; Pot sleepers; Fastening tie-rods to them IPC+CPC Available in IPC and CPC
  • E01B 3/26 combined with inserts of wood artificial stone or other material IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class E01,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 2,096
  2. CHANG AN UNIVERSITY 1,878
  3. ROAD & BRIDGE INTERNATIONAL COMPANY 1,796
  4. CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 1,493
  5. CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 1,327
  6. CCCC FIRST HIGHWAY ENGINEERING GROUP COMPANY 1,133
  7. CCCC SECOND HARBOUR ENGINEERING COMPANY 1,029
  8. PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 935
  9. TONGJI UNIVERSITY 899
  10. CATERPILLAR PAVING PRODUCTS US 868

Top Applicants (CPC)

Class E01,2013–2023, worldwide · Source: EPO PATSTAT

  1. PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 998
  2. CATERPILLAR PAVING PRODUCTS US 937
  3. CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 869
  4. WIRTGEN DE 740
  5. CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 685
  6. CHANG AN UNIVERSITY 615
  7. CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 613
  8. SOUTHEAST UNIVERSITY 562
  9. TONGJI UNIVERSITY 500
  10. ROAD & BRIDGE INTERNATIONAL COMPANY 491