CPC Main Group
E04D 1/00 Roof covering by making use of tiles, slates, shingles, or other small roofing elements (roofing supports E04D12/00)
10 direct subcodes
Child Classifications
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- E04D 1/02 Grooved or vaulted roofing elements (E04D1/28, E04D1/30 take precedence)
- E04D 1/12 Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface (E04D1/28, E04D1/30 take precedence)
- E04D 1/24 Roofing elements with cavities, e.g. hollow tiles (E04D1/28 takes precedence)
- E04D 1/26 Strip-shaped roofing elements appearing as a row of shingles
- E04D 1/28 Roofing elements comprising two or more layers, e.g. for insulation
- E04D 1/30 Special roof-covering elements, e.g. ridge tiles, gutter tiles, gable tiles, ventilation tiles (E04D3/40 takes precedence)
- E04D 1/34 Fastenings for attaching roof-covering elements to the supporting elements
- E04D 1/36 Devices for sealing the spaces or joints between roof-covering elements (sealing joints not restricted to roof-covering elements E04B1/68; )
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