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CPC Main Group Additional Only
Y04S 20/00

Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof

Filing statistics

CPC Y04S 20/00 belongs to the parent subclass Y04S, which recorded 133,508 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,971 in 2013 to 16,092 in 2023 (+102%), peaking at 17,475 applications in 2022. The most active applicants in class Y04 are SGCC(STATE GRID CORPORATION OF CHINA) (11,048 applications), GUANGDONG POWER GRID CORPORATION (3,187 applications) and NORTH CHINA ELECTRIC POWER UNIVERSITY (1,200 applications).

Source: EPO PATSTAT, worldwide filings

4 direct subcodes

Child Classifications

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  • Y04S 20/12 Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
  • Y04S 20/14 Protecting elements, switches, relays or circuit breakers
  • Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Top Applicants

Top 10 applicants by patent filingsfor 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