Connections for building structures in general

Introduced: September 1968

Last revised: January 2006

Full Title

Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs > Connections for building structures in general

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: BUILDING
Subclass:: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS

Related Keywords

CLAMP(S) for connecting building elementJOINTS for building structuresPLUGS for connecting building elementsTIE(S) -rods as building connections

4 direct subcodes

Child Classifications

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E04B 1/41 Connecting devices specially adapted for embedding in concrete or masonry
E04B 1/48 Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
E04B 1/58 of bar-shaped building elements
E04B 1/61 of slab-shaped building elements with each other

Top Applicants

Top 10 applicants by patent filingsfor 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