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IPC Subgroup
E02D 3/026

by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers

Introduced: January 1980

Last revised: January 2006

Full Title

Improving or preserving soil or rock, e.g. preserving permafrost soil > Improving by compacting > by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers

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 RAMMINGROLLING for compacting foundation soilTAMPING for compacting foundation soilusing VIBRATIONS for compacting foundation soil

2 direct subcodes

Child Classifications

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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