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IPC Main Group
E04B 1/00

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

Introduced: September 1968

Last revised: January 2006

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

BALCONIESFRAMES for building structures

13 direct subcodes

Child Classifications

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  • E04B 1/16 Structures made from masses, e.g. concrete, cast or similarly formed with or without making use of additional elements, such as permanent forms, sub-structures to be coated with load-bearing material
  • E04B 1/32 Arched structures; Vaulted structures; Folded structures
  • E04B 1/34 Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
  • E04B 1/342 Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
  • E04B 1/348 Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form
  • E04B 1/35 Extraordinary methods of construction, e.g. lift-slab, jack-block
  • E04B 1/36 Bearings or like supports allowing movement
  • E04B 1/99 Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound

Top Applicants

Top 10 applicants by patent filingsfor class E04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
  2. ZHEJIANG YASHA DECORATION COMPANY 4,488
  3. SGCC(STATE GRID CORPORATION OF CHINA) 4,427
  4. CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
  5. CHINA MCC17 GROUP COMPANY 3,122
  6. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
  7. SHENYANG JIANZHU UNIVERSITY 2,420
  8. CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
  9. CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
  10. CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967