with digging wheels turning round an axis

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Dredgers; Soil-shifting machines > mechanically-driven > with digging wheels turning round an axis

CPC:

Dredgers; Soil-shifting machines (for special purposes E02F5/00; other machines or apparatus for mining E21C; tunnelling E21D) > mechanically-driven > with digging wheels turning round an axis

CPC subdivides this area 4x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

Child Classifications

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E02F 3/181 CPC only CPC only
E02F 3/183 CPC only CPC only
E02F 3/185 CPC only CPC only
E02F 3/186 CPC only CPC only
E02F 3/188 CPC only CPC only
E02F 3/20 with tools that only loosen the material +1 CPC IPC+CPC Available in IPC and CPC
E02F 3/22 Component parts 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