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DIFF Subgroup
E01C 23/04

Devices for laying reinforcing elements or dowel bars ; Removable supports for reinforcing elements (non- removable supports therefor E01C11/16; side forms adapted to supporting reinforcement E01C19/50); Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements

Introduced: September 1968

Title

Titles differ between systems:

IPC: Devices for laying reinforcing elements or dowel bars; Removable supports for reinforcing elements; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement

CPC: Devices for laying reinforcing elements or dowel bars ; Removable supports for reinforcing elements (non- removable supports therefor E01C11/16; side forms adapted to supporting reinforcement E01C19/50); Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements

Full Title

Full titles differ between systems:

IPC:

Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces > Devices for laying reinforcing elements or dowel bars; Removable supports for reinforcing elements; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement

CPC:

Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces (apparatus for reconditioning of salvaged non-hydraulic compositions E01C19/10) > Devices for laying reinforcing elements or dowel bars ; Removable supports for reinforcing elements (non- removable supports therefor E01C11/16; side forms adapted to supporting reinforcement E01C19/50); Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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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