CPC Main Group
E04G 15/00 Forms or shutterings for making openings, cavities, slits, or channels (forming part of shuttering for walls E04G11/06 )
3 direct subcodes
Child Classifications
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- E04G 15/02 for windows, doors, or the like
- E04G 15/04 Cores for anchor holes or the like
- E04G 15/06 for cavities or channels in walls of floors, e.g. for making chimneys
Top Applicants
Top 10 applicants by patent filingsfor class E04, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
- CHINA MCC17 GROUP COMPANY 1,593
- ZHEJIANG YASHA DECORATION COMPANY 1,551
- SGCC(STATE GRID CORPORATION OF CHINA) 1,297
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
- SHENYANG JIANZHU UNIVERSITY 926
- VAELINGE INNOVATION SE 901
- CHINA MCC5 GROUP CORPORATION 894
- VKR HOLDING DK 854
- SHANGHAI BAOYE GROUP CORPORATION 753