With the analysis among 5,774 patents, we discovered top 457 key players by total patent application. Hitachi Ltd., TOSHIBA Corp., State Grid Corp. of China are dominant in this area. They take 12.30% of the total patent filing.
With the analysis among related 1,861 patents applied in the last 5 years. We discover 250 most active companies in this area. The fast-growing China Yangtze Power Co., Ltd., State Grid Corp. of China, Harbin Electric Machinery Co., Ltd. take 8.01% of patent filing during this period.
With the analysis among related 1,861 patents in last 5 years, we discover 141 new entrants. Zhejiang Sci-Tech University, Guizhou Power Grid Corp., Guangxi Guiguan Electric Power Co., Ltd. are the most active new entrants in this area.
With the analysis among 923 patents, we discovered top 136 universities and scientific research institutions by total patent application. Hohai University, Xi'an University of Technology, Xihua University are dominant in this area. They take 10.83% of the total patent filing.