CPC Main Group Additional Only
Y04S 10/00 Systems supporting electrical power generation, transmission or distribution
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