IPC Main Group
E04H 12/00 Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- BUILDING
- Subclass:
- BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
Additional Content
Cooling towers Derricks for oil drilling
Related Keywords
building aspects of BEACONSof towers, masts, or polesbuilding aspects of LIGHTHOUSESMASTS as buildings structuresPOLES fixed in ground or the likePOSTSPYLONSSPIRESSTEEPLESbuilding aspects of TOWER(S)
11 direct subcodes
Child Classifications
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- E04H 12/02 Structures made of specified materials
- E04H 12/16 Prestressed structures
- E04H 12/18 movable or with movable sections, e.g. rotatable or telescopic
- E04H 12/2 Side-supporting means therefor, e.g. using guy ropes or struts
- E04H 12/22 Sockets or holders for poles or posts
- E04H 12/24 Cross-arms
- E04H 12/26 Winding towers for mines
- E04H 12/28 Chimney stacks, e.g. free-standing, or similar ducts
- E04H 12/3 Water-towers
- E04H 12/32 Flagpoles
- E04H 12/34 Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
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