IPC Subclass
E02B HYDRAULIC ENGINEERING
Introduced: September 1968
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
- Subclass:
- HYDRAULIC ENGINEERING
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.
Related Keywords
CONDUITSDOCK(S)hydraulic ENGINEERINGHYDRAULIC(S) engineeringINTAKES for water power planthydraulic engineering work for PORTS or harbourssubaqueous STRUCTURESSUBAQUEOUS structuresSUBIRRIGATIONhydraulic engineering work for WATERWAYS
10 direct subcodes
Child Classifications
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- E02B 1/00 Equipment or apparatus for, or methods of, general hydraulic engineering
- E02B 11/00 Drainage of soil, e.g. for agricultural purposes
- E02B 13/00 Irrigation ditches, i.e. gravity flow, open channel water distribution systems
- E02B 15/00 Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B 17/00 Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs; Construction methods therefor
- E02B 3/00 Engineering work in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering work in general
- E02B 5/00 Artificial water canals
- E02B 7/00 Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B 8/00 Details of barrages or weirs
- E02B 9/00 Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
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