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IPC Subclass
E02C

SHIP-LIFTING DEVICES OR MECHANISMS

Introduced: September 1968

Classification Context

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

Description

E02C covers mechanical and hydraulic systems designed to lift, raise, or vertically transport ships and vessels. This includes ship lifts, drydocks, floating docks, and related infrastructure mechanisms that enable vessels to be removed from water for maintenance, repair, or transfer between water levels. The classification encompasses the structural design, operational mechanisms, and control systems of such devices, whether powered by hydraulics, electricity, or other means. Adjacent classes address general hydraulic engineering (E02D), foundation work (E02B), and specific water transport infrastructure.

Related Keywords

ship- LIFTING devices or mechanismsSHIP(S) -lifting devices or mechanismsUNDERWATER structures

3 direct subcodes

Child Classifications

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  • E02C 3/00 Inclined-plane ship-lifting mechanisms

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