E04B 2/56 walls of framework or pillarwork; Walls incorporating load-bearing elongated members (E04B2/74, E04B2/88 take precedence; pillars E04C3/30)
Full Title
Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls (connections for building structures in general E04B1/38; insulation for buildings in general E04B1/62; building elements of relatively thin form for parts of buildings E04C2/00) > walls of framework or pillarwork; Walls incorporating load-bearing elongated members (E04B2/74, E04B2/88 take precedence; pillars E04C3/30)
Filing statistics
CPC E04B 2/56 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
6 direct subcodes
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor class E04, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
- CHINA MCC17 GROUP COMPANY 1,593
- ZHEJIANG YASHA DECORATION COMPANY 1,551
- SGCC(STATE GRID CORPORATION OF CHINA) 1,297
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
- SHENYANG JIANZHU UNIVERSITY 926
- VAELINGE INNOVATION SE 901
- CHINA MCC5 GROUP CORPORATION 894
- VKR HOLDING DK 854
- SHANGHAI BAOYE GROUP CORPORATION 753