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IPC Subgroup
E02F 5/3

Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil

Introduced: September 1968

Last revised: January 2006

Full Title

Dredgers or soil-shifting machines for special purposes > Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
Subclass:
DREDGING; SOIL-SHIFTING

Related Keywords

BLASTING in soil-shiftingCRACKING of soil preparatory to shiftingLOOSENING soil preparatory to shiftingdislodging STONE(S) in soil shiftingTHAWING in soil-shifting

1 direct subcode

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