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CPC Subclass Not Allocatable
E02B

HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)

Description

E02B covers the design, construction, and maintenance of hydraulic structures and water management systems. This includes dams, locks, weirs, sluices, breakwaters, seawalls, and coastal defense installations, as well as dredging equipment and sediment control systems. The subclass addresses both civil engineering works for water control and flood prevention, and structures for navigation and harbor development. Related structural foundations and earthworks are classified separately under E02D.

11 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 3,939
  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