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PCE
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IPC Main Group
E02C 1/00

Locks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
Subclass:
SHIP-LIFTING DEVICES OR MECHANISMS

Related Keywords

(1) [= ship-lifting devices]SHAFT(S) locks (ship lifting)

5 direct subcodes

Child Classifications

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  • E02C 1/02 with auxiliary basins
  • E02C 1/04 with floating troughs
  • E02C 1/06 Devices for filling or emptying locks
  • E02C 1/08 Arrangements for dissipating the energy of the water
  • E02C 1/1 Equipment for use in connection with the navigation of ships in locks; Mooring equipment

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