CPC Subgroup
E02F 3/34 with bucket-arms directly pivoted on the frames of tractors or self-propelled machines
Full Title
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
10 direct subcodes
Child Classifications
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- E02F 3/342 Buckets emptying overhead (E02F3/348 - E02F3/358 take precedence)
- E02F 3/345 Buckets emptying side-ways (E02F3/348 - E02F3/358 take precedence)
- E02F 3/348 Buckets emptying into a collecting or conveying device
- E02F 3/352 Buckets movable along a fixed guide
- E02F 3/355 Buckets connected to the rear end of a tractor
- E02F 3/358 Bucket-arms pivoted on a turntable being part of a tractor frame
Top Applicants
Top 10 applicants by patent filingsfor 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