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)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Special arrangements or devices in connection with roof coverings; Roof drainage
CPC: Special arrangements or devices in connection with roof coverings; Roof drainage (ventilation tiles E04D1/30; ventilation slabs E04D3/40; internal channels E04F17/00)
Full Title
Full titles differ between systems:
Special arrangements or devices in connection with roof coverings; Roof drainage
Special arrangements or devices in connection with roof coverings; Roof drainage (ventilation tiles E04D1/30; ventilation slabs E04D3/40; internal channels E04F17/00)
Of 14 combined children, 9 exist in both systems.
4 codes are CPC-only extensions, 1 exist only in IPC.
6 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E04D 13/02 Roof-covering aspects of dormer windows (E04D13/14 takes precedence; structures therefor E04B7/18) IPC+CPC Available in IPC and CPC
- E04D 13/03 Sky-lights; Domes; Ventilating sky-lights (E04D13/14 takes precedence; structures therefor, E04B7/18; ) +6 CPC IPC+CPC Available in IPC and CPC
- E04D 13/04 Roof drainage; Drainage fittings in flat roofs, (gutter tiles E04D1/30; gutter slabs E04D3/40; street gullies E03F5/04) +1 CPC IPC+CPC Available in IPC and CPC
- E04D 13/12 Devices or arrangements allowing walking on the roof or in the gutter IPC+CPC Available in IPC and CPC
- E04D 13/14 Junctions of roof sheathings to chimneys or other parts extending above the roof +2 CPC IPC+CPC Available in IPC and CPC
- E04D 13/16 Insulating devices or arrangements in so far as the roof covering is concerned, +2 CPC IPC+CPC Available in IPC and CPC
- E04D 13/17 Ventilation of roof coverings not otherwise provided for (ventilation of rooms or spaces F24F) since 1995 +3 CPC IPC+CPC Available in IPC and CPC
- E04D 13/18 Roof covering aspects of energy collecting devices, e.g. including solar panels since 1985 IPC only IPC only
Top Applicants
Top Applicants (IPC)
Class E04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
- ZHEJIANG YASHA DECORATION COMPANY 4,488
- SGCC(STATE GRID CORPORATION OF CHINA) 4,427
- CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
- CHINA MCC17 GROUP COMPANY 3,122
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
- SHENYANG JIANZHU UNIVERSITY 2,420
- CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
- CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
- CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967
Top Applicants (CPC)
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