With the analysis among 778,192 patents, we discovered top 471 key players by total patent application. Hitachi Ltd., Fujitsu Ltd., Fujitsu Microelectronics America, Inc. are dominant in this area. They take 4.55% of the total patent filing.
With the analysis among related 297,754 patents applied in the last 5 years. We discover 500 most active companies in this area. The fast-growing State Grid Corp. of China, Toyota Motor Corp., Honda Motor Co., Ltd. take 1.65% of patent filing during this period.
With the analysis among 103,026 patents, we discovered top 393 universities and scientific research institutions by total patent application. Zhejiang University, Tsinghua University, Jiangsu University are dominant in this area. They take 3.58% of the total patent filing.