Systems supporting electrical power generation, transmission or distribution

Filing statistics

CPC Y04S 10/00 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

9 direct subcodes

Child Classifications

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Y04S 10/12 Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Y04S 10/14 Energy storage units
Y04S 10/16 Electric power substations
Y04S 10/18 using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]
Y04S 10/20 using protection elements, arrangements or systems
Y04S 10/22 Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
Y04S 10/40 Display of information, e.g. of data or controls
Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Top Applicants

Top 10 applicants by patent filingsfor class Y04, 2013–2023, worldwide · Source: EPO PATSTAT

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