E04B GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
Introduced: September 1968
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- BUILDING
- Subclass:
- GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
Description
E04B encompasses the structural and protective components forming the primary envelope and interior divisions of buildings. This subclass covers walls (including partition walls), roofing systems, floor construction, ceiling assemblies, and thermal or acoustic insulation materials and methods applied to building structures. The classification includes both the structural design and material composition of these building elements, as well as protective systems against weathering, moisture, fire, and noise. Related specialized building systems (such as doors, windows, or HVAC installations) are classified elsewhere in the E04 building category.
Related Keywords
5 direct subcodes
Child Classifications
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- E04B 1/00 Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B 2/00 Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B 5/00 Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B 7/00 Roofs; Roof construction with regard to insulation
- E04B 9/00 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
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