With the analysis among 1,013 patents, we discovered top 478 key players by total patent application. Yunnan Dahongshan Tunnel Co. Ltd., China Coal Science and Industry Group Wuhan Design and Research Institute Co., Ltd., Shell Oil Co. are dominant in this area. They take 13.82% of the total patent filing.
Yunnan Sheng, China
Patent: 78
Hubei Sheng, China
Patent: 41
Texas, United States
Patent: 21
Henan Sheng, China
Patent: 13
Texas, United States
Patent: 10
Guangdong Sheng, China
Patent: 10
Shaanxi Sheng, China
Patent: 10
Beijing Shi, China
Patent: 8
Beijing Shi, China
Patent: 8
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With the analysis among related 568 patents applied in the last 5 years. We discover 437 most active companies in this area. The fast-growing China Railway Engineering Equipment Group Co., Ltd., China Railway Tunnel Bureau Group Co., Ltd., Beijing Huadian Zhongbang Materiel Transfer System Co. Ltd. take 4.93% of patent filing during this period.
Henan Sheng, China
Patent: 11
Guangdong Sheng, China
Patent: 9
Beijing Shi, China
Patent: 8
Shaanxi Sheng, China
Patent: 8
Beijing Shi, China
Patent: 8
Yunnan Sheng, China
Patent: 7
Hubei Sheng, China
Patent: 7
Sichuan Sheng, China
Patent: 7
Henan Sheng, China
Patent: 6
With the analysis among related 568 patents in last 5 years, we discover 392 new entrants. Beijing Huadian Zhongbang Materiel Transfer System Co. Ltd., Huadian Environmental System Engineering Co., Ltd., Sichuan Tianyi Petrochemical Engineering Co., Ltd. are the most active new entrants in this area.
Beijing Shi, China
Patent: 8
Beijing Shi, China
Patent: 8
Sichuan Sheng, China
Patent: 7
Henan Sheng, China
Patent: 6
Shaanxi Sheng, China
Patent: 5
Hebei Sheng, China
Patent: 5
Beijing Shi, China
Patent: 5
Shaanxi Sheng, China
Patent: 4
Anhui Sheng, China
Patent: 4
With the analysis among 143 patents, we discovered top 48 universities and scientific research institutions by total patent application. University of Science & Technology Beijing, Kunming University of Science & Technology, Shenyang University are dominant in this area. They take 14.69% of the total patent filing.
Beijing Shi, China
Patent: 8
Yunnan Sheng, China
Patent: 7
Liaoning Sheng, China
Patent: 6
Shandong Sheng, China
Patent: 5
North China University of Science & Technology
Hebei Sheng, China
Patent: 5
Anhui Sheng, China
Patent: 3
Sichuan Sheng, China
Patent: 3
Shanghai Shi, China
Patent: 2
Zhejiang Sheng, China
Patent: 2
Beijing Shi, China
Patent: 2