Foundations for special purposes

Introduced: September 1968

Last revised: January 2006

Full Title

Foundations as substructures > Foundations for special purposes

Classification Context

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

Filing statistics

IPC E02D 27/32 belongs to the parent subclass E02D, which recorded 300,539 patent applications worldwide between 2013 and 2023. Annual filings grew from 11,339 in 2013 to 42,780 in 2023 (+277%). 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

11 direct subcodes

Child Classifications

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E02D 27/34 Foundations for sinking or earthquake territories
E02D 27/35 Foundations formed in frozen ground, e.g. in permafrost soil
E02D 27/36 Foundations formed in moors or bogs
E02D 27/38 Foundations for large tanks, e.g. oil tanks
E02D 27/4 Foundations for dams across valleys or for dam constructions
E02D 27/42 Foundations for poles, masts, or chimneys
E02D 27/44 Foundations for machines, engines, or ordnance
E02D 27/46 Foundations for supply conduits or other canals
E02D 27/48 Foundations inserted underneath existing buildings or constructions
E02D 27/5 Anchored foundations
E02D 27/52 Submerged foundations

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