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PCE
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IPC Subgroup
E04C 3/3

Columns; Pillars; Struts

Introduced: September 1968

Last revised: January 2006

Full Title

Structural elongated elements designed for load-supporting > Columns; Pillars; Struts

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
BUILDING
Subclass:
STRUCTURAL ELEMENTS; BUILDING MATERIALS

Related Keywords

COLUMNS (building elements)NEWEL-POSTSPILLAR(S) [= building elements]STANCHIONS as building elementsSTRUTS as building elements

3 direct subcodes

Child Classifications

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  • E04C 3/32 of metal
  • E04C 3/34 of concrete or other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
  • E04C 3/36 of materials not covered by groups or; 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 6,575
  2. ZHEJIANG YASHA DECORATION COMPANY 4,488
  3. SGCC(STATE GRID CORPORATION OF CHINA) 4,427
  4. CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
  5. CHINA MCC17 GROUP COMPANY 3,122
  6. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
  7. SHENYANG JIANZHU UNIVERSITY 2,420
  8. CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
  9. CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
  10. CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967