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CPC Subgroup
E01D 15/12

Portable or sectional bridges (floating bridges E01D15/14)

Full Title

Movable or portable bridges; Floating bridges > Portable or sectional bridges (floating bridges E01D15/14)

Filing statistics

CPC E01D 15/12 belongs to the parent subclass E01D, which recorded 43,217 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,120 in 2013 to 5,567 in 2023 (+397%), peaking at 6,371 applications in 2020. The most active applicants in class E01 are PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN (998 applications), CATERPILLAR PAVING PRODUCTS (937 applications) and CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY (869 applications).

Source: EPO PATSTAT, worldwide filings

4 direct subcodes

Child Classifications

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  • E01D 15/122
  • E01D 15/124
  • E01D 15/127 combined with ground-supported vehicles for the transport, handling or placing of such bridges or of sections thereof
  • E01D 15/133 built-up from readily separable standardised sections or elements, e.g. Bailey bridges (E01D15/127 takes precedence)

Top Applicants

Top 10 applicants by patent filingsfor 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