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IPC Main Group
E02D 31/00

Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

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

Filing statistics

IPC E02D 31/00 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

Related Keywords

ground foundation measures for protecting the soil or the subsoil, e.g. preventing or counteracting oil pollutionprotection of soil against OIL(S)ground foundation measures for the PROTECTION of the soil or the subsoil waterPROTECTION of foundations or foundation structures

4 direct subcodes

Child Classifications

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  • E02D 31/06 against corrosion by soil or water
  • E02D 31/08 against transmission of vibrations or movements in the foundation soil

Top Applicants

Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. KOMATSU JP 3,549
  2. CATERPILLAR US 2,893
  3. HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
  4. HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
  5. POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
  6. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
  7. SGCC(STATE GRID CORPORATION OF CHINA) 2,119
  8. HOHAI UNIVERSITY 1,821
  9. KOMATSU 1,775
  10. POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725