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DIFF Subgroup Additional Only
Y04S 10/123

the energy generation units being or involving renewable energy sources

Full Title

Systems supporting electrical power generation, transmission or distribution > Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation > the energy generation units being or involving renewable energy sources

Top Applicants

Top Applicants (CPC)

Class Y04,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 11,048
  2. GUANGDONG POWER GRID CORPORATION 3,187
  3. NORTH CHINA ELECTRIC POWER UNIVERSITY 1,200
  4. STATE GRID JIANGSU ELECTRIC POWER COMPANY 956
  5. STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY 929
  6. SIEMENS DE 899
  7. STATE GRID ZHEJIANG ELECTRIC POWER COMPANY 794
  8. GUIZHOU POWER GRID CORPORATION 770
  9. SHENZHEN POWER SUPPLY BUREAU COMPANY 745
  10. STATE GRID FUJIAN ELECTRIC POWER COMPANY 720