CPC Main Group
E04F 21/00 Implements for finishing work on buildings (for working or treating building elements of stone or stone-like material B28D)
Filing statistics
CPC E04F 21/00 belongs to the parent subclass E04F, which recorded 84,246 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,628 in 2013 to 6,284 in 2023 (+36%), peaking at 11,005 applications in 2020. The most active applicants in class E04 are CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION (1,675 applications), CHINA MCC17 GROUP COMPANY (1,593 applications) and ZHEJIANG YASHA DECORATION COMPANY (1,551 applications).
Source: EPO PATSTAT, worldwide filings
15 direct subcodes
Child Classifications
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- E04F 21/02 for applying plasticised masses to surfaces, e.g. plastering walls (; specially for flooring E04F21/20; implements for painting or decorating B44; applying liquids or other fluent materials to surfaces, in general B05)
- E04F 21/165 for finishing joints, e.g. implements for raking or filling joints, jointers (bricklayers' tools E04G21/16; repairing, e.g. filling cracks, E04G23/02 )
- E04F 21/18 for setting wall or ceiling slabs or plates (tools for mosaic work B44C)
- E04F 21/20 for laying flooring (made of similar material to roads or pavements E01C )
- E04F 21/26 for mounting staircases, e.g. tools for marking steps
- E04F 21/28 for glazing (glass cutters C03B33/10)
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