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IPC Subgroup
E04C 2/1

of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products

Introduced: September 1968

Last revised: January 2006

Full Title

Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels > characterised by specified materials > of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products

Classification Context

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

Related Keywords

building panels made of CORK(S)

4 direct subcodes

Child Classifications

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  • E04C 2/24 laminated and composed of materials covered by two or more of groups , ,

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