With the analysis among 185 patents, we discovered top 111 key players by total patent application. China Railway Siyuan Survey & Design Group Co., Ltd., China Railway First Survey & Design Institute Group Co., Ltd., Detroit Diesel Corp. are dominant in this area. They take 16.76% of the total patent filing.
Hubei Sheng, China
Patent: 15
Shaanxi Sheng, China
Patent: 9
Michigan, United States
Patent: 7
Texas, United States
Patent: 6
California, United States
Patent: 6
Sichuan Sheng, China
Patent: 6
New York, United States
Patent: 3
Illinois, United States
Patent: 3
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With the analysis among related 130 patents applied in the last 5 years. We discover 84 most active companies in this area. The fast-growing China Railway Siyuan Survey & Design Group Co., Ltd., Southwest Jiaotong University, Wuhan Institute of Geotechnical Mechanics, Chinese Academy of Sciences take 28.46% of patent filing during this period.
Hubei Sheng, China
Patent: 15
Sichuan Sheng, China
Patent: 15
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Patent: 7
Jiangsu Sheng, China
Patent: 5
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Patent: 4
Liaoning Sheng, China
Patent: 4
Sichuan Sheng, China
Patent: 4
Shaanxi Sheng, China
Patent: 4
Jiangsu Sheng, China
Patent: 3
Beijing Shi, China
Patent: 3
With the analysis among related 130 patents in last 5 years, we discover 71 new entrants. China Railway Siyuan Survey & Design Group Co., Ltd., National Institute of Natural Disaster Prevention and Control, Ministry of Emergency Management, Dalian University of Technology are the most active new entrants in this area.
Hubei Sheng, China
Patent: 15
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Patent: 4
Liaoning Sheng, China
Patent: 4
Jiangsu Sheng, China
Patent: 3
Beijing Shi, China
Patent: 3
Sichuan Sheng, China
Patent: 3
Shandong Sheng, China
Patent: 3
Shanghai Shi, China
Patent: 2
Delaware, United States
Patent: 2
Zhejiang Sheng, China
Patent: 2
With the analysis among 140 patents, we discovered top 45 universities and scientific research institutions by total patent application. Southwest Jiaotong University, Nanjing University of Aeronautics & Astronautics, Beijing Jiaotong University are dominant in this area. They take 31.43% of the total patent filing.
Sichuan Sheng, China
Patent: 28
Jiangsu Sheng, China
Patent: 7
Beijing Shi, China
Patent: 5
Beijing Shi, China
Patent: 4
Shandong Sheng, China
Patent: 3
Shanghai Shi, China
Patent: 3
China University of Mining & Technology (Beijing)
Beijing Shi, China
Patent: 3
Beijing Shi, China
Patent: 3
Zhejiang Sheng, China
Patent: 2
Beijing Shi, China
Patent: 2