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CPC Subgroup
E04B 2/16

using elements having specially-designed means for stabilising the position

Full Title

Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls (connections for building structures in general E04B1/38; insulation for buildings in general E04B1/62; building elements of relatively thin form for parts of buildings E04C2/00) > built-up from layers of building elements > Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element > using elements having specially-designed means for stabilising the position

2 direct subcodes

Child Classifications

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  • E04B 2/18 by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
  • E04B 2/20 by filling material with or without reinforcements in small channels in, or in grooves between, the elements

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