Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
E02F 3/34

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

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

Classification Context

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

6 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • E02F 3/342 Buckets emptying overhead
  • E02F 3/345 Buckets emptying side-ways
  • 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

  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