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CPC Subclass Not Allocatable
E04B

GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; )

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.

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

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
  2. CHINA MCC17 GROUP COMPANY 1,593
  3. ZHEJIANG YASHA DECORATION COMPANY 1,551
  4. SGCC(STATE GRID CORPORATION OF CHINA) 1,297
  5. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
  6. SHENYANG JIANZHU UNIVERSITY 926
  7. VAELINGE INNOVATION SE 901
  8. CHINA MCC5 GROUP CORPORATION 894
  9. VKR HOLDING DK 854
  10. SHANGHAI BAOYE GROUP CORPORATION 753