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DIFF Subgroup
E04D 3/06

of glass or other translucent material; Fixing means therefor (fixing glass panes by means applicable to windows E06B3/54)

Introduced: September 1968

Title

Titles differ between systems:

IPC: of glass or other translucent material; Fixing means therefor

CPC: of glass or other translucent material; Fixing means therefor (fixing glass panes by means applicable to windows E06B3/54)

Full Title

Full titles differ between systems:

IPC:

Roof covering by making use of flat or curved slabs or stiff sheets > of plane slabs, slates, or sheets, or in which the cross-section is unimportant > of glass or other translucent material; Fixing means therefor

CPC:

Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02) > of plane slabs, slates, or sheets, or in which the cross-section is unimportant (E04D3/35 takes precedence) > of glass or other translucent material; Fixing means therefor (fixing glass panes by means applicable to windows E06B3/54)

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

Child Classifications

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  • E04D 2003/065 2nd only CPC only CPC only
  • E04D 3/14 with glazing bars of other material, e.g. of glass IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class E04,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
  2. ZHEJIANG YASHA DECORATION COMPANY 4,488
  3. SGCC(STATE GRID CORPORATION OF CHINA) 4,427
  4. CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
  5. CHINA MCC17 GROUP COMPANY 3,122
  6. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
  7. SHENYANG JIANZHU UNIVERSITY 2,420
  8. CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
  9. CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
  10. CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967

Top Applicants (CPC)

Class E04,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
  2. CHINA MCC17 GROUP COMPANY 1,593
  3. ZHEJIANG YASHA DECORATION COMPANY 1,551
  4. SGCC(STATE GRID CORPORATION OF CHINA) 1,297
  5. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
  6. SHENYANG JIANZHU UNIVERSITY 926
  7. VAELINGE INNOVATION SE 901
  8. CHINA MCC5 GROUP CORPORATION 894
  9. VKR HOLDING DK 854
  10. SHANGHAI BAOYE GROUP CORPORATION 753