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DIFF Subgroup
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)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Structures covering a large free area, whether open-sided or not, e.g. hangars, halls

CPC: 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)

Full Title

Full titles differ between systems:

IPC:

Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs > Structures covering a large free area, whether open-sided or not, e.g. hangars, halls

CPC:

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) > 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)

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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