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IPC Subgroup
E02F 5/28

for cleaning watercourses or other waters

Introduced: September 1968

Last revised: January 2006

Full Title

Dredgers or soil-shifting machines for special purposes > for cleaning watercourses or other waters

Classification Context

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

Filing statistics

IPC E02F 5/28 belongs to the parent subclass E02F, which recorded 99,408 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,460 in 2013 to 10,933 in 2023 (+69%), peaking at 12,625 applications in 2020. The most active applicants in class E02 are KOMATSU (3,549 applications), CATERPILLAR (2,893 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (2,390 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

dredging CANAL(S)dredging LAKESdredging RIVERSSCOURING of rivers or harbours by dredgingclearing WATERWAYS by dredging

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