E04C 3/12 of wood, e.g. with reinforcements, with tensioning members (E04C3/292 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: of wood, e.g. with reinforcements, with tensioning members
CPC: of wood, e.g. with reinforcements, with tensioning members (E04C3/292 takes precedence)
Full Title
Full titles differ between systems:
Structural elongated elements designed for load-supporting > Joists; Girders, trusses, or truss-like structures, e.g. prefabricated; Lintels; Transoms > of wood, e.g. with reinforcements, with tensioning members
Structural elongated elements designed for load-supporting (as building aids E04G) > 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; ) > of wood, e.g. with reinforcements, with tensioning members (E04C3/292 takes precedence)
Of 7 combined children, 4 exist in both systems.
3 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E04C 3/14 with substantially solid, i.e. unapertured, web ( E04C3/17, E04C3/18 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
- E04C 3/16 with apertured web, e.g. trusses (E04C3/17, E04C3/18 take precedence) IPC+CPC Available in IPC and CPC
- E04C 3/17 with non-parallel upper and lower edges, e.g. roof trusses IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class E04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
- ZHEJIANG YASHA DECORATION COMPANY 4,488
- SGCC(STATE GRID CORPORATION OF CHINA) 4,427
- CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
- CHINA MCC17 GROUP COMPANY 3,122
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
- SHENYANG JIANZHU UNIVERSITY 2,420
- CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
- CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
- CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967
Top Applicants (CPC)
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