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IPC Subgroup
E02F 3/28

with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets

Introduced: September 1968

Last revised: January 2006

Full Title

Dredgers; Soil-shifting machines > mechanically-driven > with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
Subclass:
DREDGING; SOIL-SHIFTING

Related Keywords

DIPPER(S) arm excavators for dredging or soil-shiftingFORK(S) for soil-shifting machines

3 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor 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