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IPC Subgroup
E02D 5/22

Piles

Introduced: September 1968

Last revised: January 2006

Full Title

Bulkheads, piles, or other structural elements specially adapted to foundation engineering > Piles

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 5/48 Piles varying in construction along their length
  • E02D 5/5 Piles comprising both precast concrete portions and concrete portions cast
  • E02D 5/52 Piles composed of separable parts, e.g. telescopic tubes
  • E02D 5/54 Piles with prefabricated supports or anchoring parts; Anchoring piles
  • E02D 5/56 Screw piles
  • E02D 5/58 Prestressed concrete piles
  • E02D 5/6 Piles with protecting cases
  • E02D 5/62 Compacting the soil at the footing or in a casing by forcing cement or like material through tubes
  • E02D 5/64 Repairing piles

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