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DIFF Subgroup
E04B 5/40

with metal form-slabs

Introduced: September 1968

Title

Titles differ between systems:

IPC: with metal form slabs

CPC: with metal form-slabs

Full Title

Full titles differ between systems:

IPC:

Floors; Floor construction with regard to insulation; Connections specially adapted therefor > Load-carrying floor structures wholly or partly cast or similarly formed > Floor structures wholly cast with or without form units or reinforcements > with form units as part of the floor > with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element > with metal form slabs

CPC:

Floors; Floor construction with regard to insulation; Connections specially adapted therefor (elements for floors, e.g. bricks, stones, filling bodies, girders, E04C; flooring as finishing work, insulation of flooring, sectional false floors, e.g. for computers E04F15/00) > Load-carrying floor structures wholly or partly cast or similarly formed in situ (E04B5/43 - E04B5/48 take precedence; floors merely characterised by the prefabricated elements E04C) > Floor structures wholly cast in situ with or without form units or reinforcements > with form units as part of the floor > with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element > with metal form-slabs

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