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CPC Subgroup
E02D 3/032

Trench rollers

Full Title

Improving or preserving soil or rock, e.g. preserving permafrost soil (securing of slopes or inclines E02D17/20; damming or interrupting passage of underground water E02D19/12; improving soil for agricultural purposes A01; soil stabilisation for road building or like purposes E01C21/00, E01C23/10; setting rock anchoring bolts E21D) > Improving by compacting (E02D3/11 takes precedence; compacting soil locally before or while forming foundations E02D27/26, E02D27/28) > by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers (rollers for soil working in agriculture A01B29/00; rollers for road paving, such rollers usable also for compacting soil E01C19/23) > Trench rollers

Filing statistics

CPC E02D 3/032 belongs to the parent subclass E02D, which recorded 112,888 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,838 in 2013 to 13,673 in 2023 (+256%), peaking at 14,689 applications in 2021. The most active applicants in class E02 are KOMATSU (3,939 applications), CATERPILLAR (3,490 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (2,553 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor 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