Manhole shafts; Other inspection or access chambers; Accessories therefor (for underground tanks B65D90/10; for sewerage E03F5/02 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Manhole shafts; Other inspection or access chambers; Accessories therefor

CPC: Manhole shafts; Other inspection or access chambers; Accessories therefor (for underground tanks B65D90/10; for sewerage E03F5/02 )

Full Title

Full titles differ between systems:

IPC:

Underground or underwater structures; Retaining walls > Manhole shafts; Other inspection or access chambers; Accessories therefor

CPC:

underground or underwater structures (underground tanks B65D88/76; hydraulic engineering, e.g. sealings or joints, E02B; underground garages E04H6/00; underground air-raid shelters E04H9/12; burial vaults E04H13/00); Retaining walls > Manhole shafts; Other inspection or access chambers; Accessories therefor (for underground tanks B65D90/10; for sewerage E03F5/02 )

CPC subdivides this area 7x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Child Classifications

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E02D 29/121 CPC only CPC only
E02D 29/122 CPC only CPC only
E02D 29/124 CPC only CPC only
E02D 29/125 CPC only CPC only
E02D 29/127 CPC only CPC only
E02D 29/128 CPC only CPC only
E02D 29/14 Covers for manholes or the like; Frames for covers +10 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class E02,2013–2023, worldwide · Source: EPO PATSTAT

KOMATSU JP 3,549
CATERPILLAR US 2,893
HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
SGCC(STATE GRID CORPORATION OF CHINA) 2,119
HOHAI UNIVERSITY 1,821
KOMATSU 1,775
POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725

Top Applicants (CPC)

Class E02,2013–2023, worldwide · Source: EPO PATSTAT

KOMATSU JP 3,939
CATERPILLAR US 3,490
HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,553
KOMATSU 1,789
JOHN DEERE US 1,277
HITACHI CONSTRUCTION MACHINERY COMPANY 1,102
KOBELCO CONSTRUCTION MACHINERY COMPANY JP 1,014
HOHAI UNIVERSITY 975
CHINA MCC17 GROUP COMPANY 810
VOLVO CONSTRUCTION EQUIPMENT SE 787