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DIFF Subgroup
E02F 3/34

with bucket-arms directly pivoted on the frames of tractors or self-propelled machines

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Dredgers; Soil-shifting machines > mechanically-driven > with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets > with bucket-arms directly pivoted on the frames of tractors or self-propelled machines

CPC:

Dredgers; Soil-shifting machines (for special purposes E02F5/00; other machines or apparatus for mining E21C; tunnelling E21D) > mechanically-driven > with digging tools mounted on a dipper- or bucket-arm , e.g. dippers, buckets > with bucket-arms directly pivoted on the frames of tractors or self-propelled machines

Of 10 combined children, 6 exist in both systems.

4 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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  • E02F 3/3402 CPC only CPC only
  • E02F 3/3414 CPC only CPC only
  • E02F 3/3417 CPC only CPC only
  • E02F 3/342 Buckets emptying overhead (E02F3/348 - E02F3/358 take precedence) since 1985 IPC+CPC Available in IPC and CPC
  • E02F 3/345 Buckets emptying side-ways (E02F3/348 - E02F3/358 take precedence) since 1985 IPC+CPC Available in IPC and CPC
  • E02F 3/352 Buckets movable along a fixed guide since 1985 IPC+CPC Available in IPC and CPC
  • E02F 3/355 Buckets connected to the rear end of a tractor since 1985 IPC+CPC Available in IPC and CPC
  • E02F 3/358 Bucket-arms pivoted on a turntable being part of a tractor frame since 1985 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

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

Top Applicants (CPC)

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

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