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CPC Subgroup
E04C 3/30

Columns; Pillars; Struts (not designed for end loading E04C3/02; posts, masts, as independent structures E04H12/00)

Full Title

Structural elongated elements designed for load-supporting (as building aids E04G) > Columns; Pillars; Struts (not designed for end loading E04C3/02; posts, masts, as independent structures E04H12/00)

3 direct subcodes

Child Classifications

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  • E04C 3/32 of metal (E04C3/36 takes precedence)
  • E04C 3/34 of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings (E04C3/36 takes precedence)
  • E04C 3/36 of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials

Top Applicants

Top 10 applicants by patent filingsfor class E04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
  2. CHINA MCC17 GROUP COMPANY 1,593
  3. ZHEJIANG YASHA DECORATION COMPANY 1,551
  4. SGCC(STATE GRID CORPORATION OF CHINA) 1,297
  5. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
  6. SHENYANG JIANZHU UNIVERSITY 926
  7. VAELINGE INNOVATION SE 901
  8. CHINA MCC5 GROUP CORPORATION 894
  9. VKR HOLDING DK 854
  10. SHANGHAI BAOYE GROUP CORPORATION 753