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PCE
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CPC Subgroup
E04G 11/40

for coffered or ribbed ceilings

Full Title

Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs > for floors, ceilings, or roofs of plane or curved surfaces > for coffered or ribbed ceilings

3 direct subcodes

Child Classifications

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  • E04G 11/42 with beams of metal or prefabricated concrete
  • E04G 11/44 with supporting beams for the shuttering used simultaneously as permanent reinforcement of the ribs
  • E04G 11/46 of hat-like or trough-like shape encasing a rib or the section between two ribs or encasing one rib and its adjacent flat floor or ceiling section

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