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
3 direct subcodes
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT
- KOMATSU JP 3,549
- CATERPILLAR US 2,893
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
- HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
- POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
- SGCC(STATE GRID CORPORATION OF CHINA) 2,119
- HOHAI UNIVERSITY 1,821
- KOMATSU 1,775
- POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725