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CPC Subgroup
E04B 9/22

Connection of slabs, sheets or the like to the supporting construction

Full Title

Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation (ceilings used as forms for making floors E04B5/00; coverings or linings for ceilings E04F13/00) > Connection of slabs, sheets or the like to the supporting construction

Filing statistics

CPC E04B 9/22 belongs to the parent subclass E04B, which recorded 142,979 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,367 in 2013 to 13,455 in 2023 (+83%), peaking at 18,847 applications in 2020. The most active applicants in class E04 are CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION (1,675 applications), CHINA MCC17 GROUP COMPANY (1,593 applications) and ZHEJIANG YASHA DECORATION COMPANY (1,551 applications).

Source: EPO PATSTAT, worldwide filings

3 direct subcodes

Child Classifications

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  • E04B 9/225
  • E04B 9/28 with the slabs, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto

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