E04F FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Introduced: September 1968
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- BUILDING
- Subclass:
- FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Description
E04F encompasses interior and exterior finishing elements that complete building structures, including stairs, floors, wall coverings, and related installation systems. The subclass covers construction methods, material specifications, and structural designs for aesthetic and functional finishing components that are applied after primary building construction. This includes flooring systems (wooden, ceramic, resilient materials), stair construction and safety features, and interior partition finishing, but excludes primary structural elements covered by earlier building classification sections.
Related Keywords
7 direct subcodes
Child Classifications
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- E04F 10/00 Sunshades; Awnings
- E04F 11/00 Stairways, ramps, or like structures; Balustrades; Handrails
- E04F 13/00 Coverings or linings, e.g. for walls or ceilings
- E04F 15/00 Flooring
- E04F 17/00 Vertical ducts; Channels, e.g. for drainage
- E04F 19/00 Other details or constructional parts for finishing work on buildings
- E04F 21/00 Implements for finishing work on buildings
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