Structural elongated elements designed for load-supporting (as building aids E04G)

Filing statistics

CPC E04C 3/00 belongs to the parent subclass E04C, which recorded 58,394 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,956 in 2013 to 4,863 in 2023 (+23%), peaking at 6,403 applications in 2017. 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

4 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

E04C 3/005
E04C 3/02 Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; (E04C3/38 takes precedence; for structures characterised by movable, separable, or collapsible parts E04B1/343; )
E04C 3/30 Columns; Pillars; Struts (not designed for end loading E04C3/02; posts, masts, as independent structures E04H12/00)
E04C 3/38 Arched girders or portal frames (straight girders able to be bent E04C3/02; inflatable E04H15/20)

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