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IPC Main Group
E02B 9/00

Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same

Introduced: September 1968

Last revised: January 2006

Classification Context

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

Related Keywords

water or tide MILL(S)water POWER plantWATER power plants

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