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.

Filing statistics

IPC subclass E02B recorded 132,137 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,392 in 2013 to 17,456 in 2023 (+224%), peaking at 20,009 applications in 2020. The most active applicants in class E02 are KOMATSU (3,549 applications), CATERPILLAR (2,893 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (2,390 applications).

Source: EPO PATSTAT, worldwide filings

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

Navigate with arrow keys, Enter to open

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