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IPC Subgroup
E02D 3/1

by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains

Introduced: September 1968

Last revised: January 2006

Full Title

Improving or preserving soil or rock, e.g. preserving permafrost soil > Improving by compacting > by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains

Classification Context

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

Related Keywords

compacting foundation soil by BLASTINGde-aerating for consolidating foundation soilDRAINAGE for consolidating foundation soilWATERING for compacting 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