Special arrangements or devices in connection with roof coverings; Roof drainage

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: BUILDING
Subclass:: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS

Filing statistics

IPC E04D 13/00 belongs to the parent subclass E04D, which recorded 74,274 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,251 in 2013 to 9,324 in 2023 (+119%). The most active applicants in class E04 are CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION (6,575 applications), ZHEJIANG YASHA DECORATION COMPANY (4,488 applications) and SGCC(STATE GRID CORPORATION OF CHINA) (4,427 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

DRAINAGE of roofsPARAPETSVENTS for cooling component of roofs

10 direct subcodes

Child Classifications

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E04D 13/02 Roof-covering aspects of dormer windows
E04D 13/03 Sky-lights; Domes; Ventilating sky-lights
E04D 13/04 Roof drainage; Drainage fittings in flat roofs
E04D 13/1 Snow traps
E04D 13/12 Devices or arrangements allowing walking on the roof or in the gutter
E04D 13/14 Junctions of roof sheathings to chimneys or other parts extending above the roof
E04D 13/15 Trimming strips; Edge strips; Fascias
E04D 13/16 Insulating devices or arrangements in so far as the roof covering is concerned
E04D 13/17 Ventilation of roof coverings not otherwise provided for
E04D 13/18 Roof covering aspects of energy collecting devices, e.g. including solar panels

Top Applicants

Top 10 applicants by patent filingsfor 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