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IPC Subgroup
E02D 27/32

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

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

  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