CPC Subclass Not Allocatable
E04D ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00)
Description
E04D covers roof coverings, sky-lights, gutters, and associated tools used in roof construction and maintenance. This subclass includes materials and systems for waterproofing and weatherproofing roof surfaces (such as tiles, shingles, membranes, and metal sheets), roof windows and light-admitting devices, drainage systems for roof water removal, and specialized hand or mechanical tools designed for roof work. The classification encompasses both the finished roof products and the methods of installation, as well as repair and maintenance equipment specific to roofing operations.
9 direct subcodes
Child Classifications
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- E04D 1/00 Roof covering by making use of tiles, slates, shingles, or other small roofing elements (roofing supports E04D12/00)
- E04D 11/00 Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00,
- E04D 12/00 Non-structural supports for roofing materials, e.g. battens, boards (E04D11/02 take precedence; )
- E04D 13/00 Special arrangements or devices in connection with roof coverings; Roof drainage (ventilation tiles E04D1/30; ventilation slabs E04D3/40; internal channels E04F17/00)
- E04D 15/00 Apparatus or tools for roof working
- E04D 3/00 Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02)
- E04D 5/00 Roof covering by making use of flexible material, e.g. supplied in roll form (using stiff sheets E04D3/00; gravelling of flat roofs E04D7/00 ; built-up roofs E04D11/02)
- E04D 7/00 Roof covering sealing masses applied in situ; Gravelling of flat roofs
- E04D 9/00 Roof covering by using straw, thatch, or like materials (impregnation against incendiary damage B27K)
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