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

Introduced: September 1968

Title

Titles differ between systems:

IPC: Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails

CPC: Transverse or longitudinal sleepers (for switches or crossings E01B7/22); Other means resting directly on the ballastway for supporting rails

Full Title

Full titles differ between systems:

IPC:

Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails

CPC:

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

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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E01B 3/02 made from wood (drying or impregnating B27K) IPC+CPC Available in IPC and CPC
E01B 3/16 made from steel IPC+CPC Available in IPC and CPC
E01B 3/28 made from concrete or from natural or artificial stone (manufacture B28) IPC+CPC Available in IPC and CPC
E01B 3/44 made from other materials only if the material is essential IPC+CPC Available in IPC and CPC
E01B 3/46 made from different materials (E01B3/26, E01B3/42 take precedence) IPC+CPC Available in IPC and CPC
E01B 3/48 Distance keepers or tie-rods for sleepers 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