IPC Main Group
E04B 2/00 Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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
FILLERS in wallsHEAT insulating of building structuresINSULATION in building wall constructionINSULATION of wallsreducing NOISE by insulating building structuresPARTITIONS in buildingsPILASTERSinsulating building structuresprotection of building structures against VIBRATIONSWALL(S) [= building structures]
6 direct subcodes
Child Classifications
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- E04B 2/02 built-up from layers of building elements
- E04B 2/56 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B 2/72 Walls of elements of relatively thin form
- E04B 2/74 Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B 2/84 Walls made by casting, pouring, or tamping
- E04B 2/88 Curtain walls
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