characterised by the shape or structure (translucent E04C2/54)

Introduced: September 1968

Title

Titles differ between systems:

IPC: characterised by the shape or structure

CPC: characterised by the shape or structure (translucent E04C2/54)

Full Title

Full titles differ between systems:

IPC:

Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels > characterised by the shape or structure

CPC:

Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels (materials or manufacture, see the relevant subclasses, e.g. B27N, D21J; made in situ E04B; specially designed for insulation or other protection E04B1/62; load-carrying floor structures E04B5/02, E04B5/16; roofs consisting of self-supporting slabs E04B7/20; roof or like covering elements E04D3/00; for lining or finishing E04F13/00) > characterised by the shape or structure (translucent E04C2/54)

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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E04C 2/32 formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material +4 CPC IPC+CPC Available in IPC and CPC
E04C 2/34 composed of two or more spaced sheet-like parts (E04C2/32 takes precedence; spacers for cavity walls E04B2/44) +5 CPC IPC+CPC Available in IPC and CPC
E04C 2/38 with attached ribs, flanges, or the like, e.g. framed panels (concerned with attaching to other panels or elements to form a structure, see the places for the relevant structure, e.g. E04B2/00) +4 CPC IPC+CPC Available in IPC and CPC
E04C 2/40 composed of a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected +1 CPC IPC+CPC Available in IPC and CPC
E04C 2/42 Gratings; Grid-like panels (reinforcing elements E04C5/00; built-in gratings E04F19/10; gratings in general F16S3/00) +3 CPC IPC+CPC Available in IPC and CPC

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