Improving or preserving soil or rock, e.g. preserving permafrost soil

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
Subclass:: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES

Related Keywords

CONSOLIDATING foundation soilstabilising EARTH for foundationsimproving FOUNDATION(S) soilstabilising SOIL for foundationsSTABILISATION of soil for foundations

3 direct subcodes

Child Classifications

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E02D 3/02 Improving by compacting
E02D 3/11 by thermal, electrical or electrochemical means
E02D 3/12 Consolidating by placing solidifying or pore-filling substances in the soil

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