With the analysis among 179 patents, we discovered top 114 key players by total patent application. Teikoku Piston Ring Co., Ltd., Panasonic Intellectual Property Management Co. Ltd., Kubota Corp. are dominant in this area. They take 15.08% of the total patent filing.
Tokyo-to, Japan
Patent: 12
Ibaraki-ken, Japan
Patent: 5
Chiba-ken, Japan
Patent: 3
Anhui Sheng, China
Patent: 3
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With the analysis among related 123 patents applied in the last 5 years. We discover 101 most active companies in this area. The fast-growing Kubota Corp., Tongji University, Guilin University of Technology take 10.57% of patent filing during this period.
Shanghai Shi, China
Patent: 3
Guangxi Zhuangzu Zizhiqu, China
Patent: 3
Guangdong Sheng, China
Patent: 3
Tianjin Shi, China
Patent: 2
Jiangsu Sheng, China
Patent: 2
Beijing Shi, China
Patent: 2
Yunnan Sheng, China
Patent: 2
With the analysis among related 123 patents in last 5 years, we discover 90 new entrants. Kubota Corp., Guilin University of Technology, Yangzhou University are the most active new entrants in this area.
Guangxi Zhuangzu Zizhiqu, China
Patent: 3
Jiangsu Sheng, China
Patent: 2
Beijing Shi, China
Patent: 2
Yunnan Sheng, China
Patent: 2
Jilin Sheng, China
Patent: 2
Zhejiang Sheng, China
Patent: 1
With the analysis among 103 patents, we discovered top 65 universities and scientific research institutions by total patent application. Tongji University, South China University of Technology, Donghua University are dominant in this area. They take 10.68% of the total patent filing.
Shanghai Shi, China
Patent: 4
Guangdong Sheng, China
Patent: 4
Shanghai Shi, China
Patent: 3
Guangxi Zhuangzu Zizhiqu, China
Patent: 3
Tianjin Shi, China
Patent: 3
Jilin Sheng, China
Patent: 2
Hunan Sheng, China
Patent: 2
Beijing Shi, China
Patent: 2
Jiangsu Sheng, China
Patent: 2
Jiangsu Sheng, China
Patent: 2