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DIFF Subgroup
E02D 31/14

against frost heaves in soil

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution > against soil pressure or hydraulic pressure > against frost heaves in soil

CPC:

Protective arrangements for foundations or foundation structures ; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution (spillage retaining means for tanks B65D90/24) > against soil pressure or hydraulic pressure > against frost heaves in soil

No child classifications to compare. This is a leaf node in both 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