CPC 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 (scaffolds, shutterings E04G; structures specially adapted for buildings for special purposes, general layout of buildings, e.g. modular co-ordination, E04H)
18 direct subcodes
Child Classifications
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- E04B 1/02 Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements (E04B1/32 - E04B1/36 take precedence)
- E04B 1/16 Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material (E04B1/32 - E04B1/36 take precedence)
- E04B 1/18 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons (E04B1/32 - E04B1/36 take precedence; elongated load-supporting parts as elements, trusses, truss-like structures E04C3/00)
- E04B 1/32 Arched structures; Vaulted structures; Folded structures ( vaulted roofs E04B7/08)
- 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 (E04B1/342, E04B1/343, E04B1/348 take precedence; for floors E04B5/43; buildings for special purposes, e.g. withstanding earthquake, E04H)
- E04B 1/342 Structures covering a large free area, whether open-sided or not, e.g. hangars, halls (roof trusses E04C3/00; non-structural features for specified purposes, see the relevant groups of E04H)
- E04B 1/343 Structures characterised by movable, separable, or collapsible parts, e.g. for transport (movable roof parts E04B7/16; floatable buildings B63B; small prefabricated buildings, transportable as a whole, E04H1/12; small garages E04H6/02; tents or canopies, in general E04H15/00)
- 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 (E04B1/34 takes precedence; falsework, shuttering for shaping walls, floors, ceilings or roofs in situ E04G11/04; conveying or assembling of building materials E04G21/00; working measures on existing buildings E04G23/00)
- E04B 1/36 Bearings or like supports allowing movement (for bridges E01D19/04; buildings with-standing earthquakes E04H9/02)
- E04B 1/38 Connections for building structures in general
- E04B 1/62 Insulation or other protection; Elements or use of specified material therefor (chemical compositions C01 - C11; implements for applying insulation or sealings E04F21/00; buildings to withstand, or to provide protection against, external undesired influences E04H9/00; sealing pipes in walls or partitions F16L5/02; shielding against dangerous radiation G21F)
- E04B 1/99 Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound (E04B1/82 takes precedence; acoustics in general G10K11/00; electric signal processing for producing a reverberation or echo sound G10K15/08)
Top Applicants
Top 10 applicants by patent filingsfor 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