With the analysis among 257 patents, we discovered top 139 key players by total patent application. Chevron, Inc., Dyno Nobel AS, China Railway Tunnel Bureau Group Co., Ltd. are dominant in this area. They take 11.67% of the total patent filing.
Pennsylvania, United States
Patent: 13
China Railway Tunnel Bureau Group Co., Ltd.
Guangdong Sheng, China
Patent: 8
Beijing Shi, China
Patent: 7
China Railway Tunnel Co Ltd.
Henan Sheng, China
Patent: 7
China Petroleum & Chemical Corp.
Beijing Shi, China
Patent: 5
China Construction Fourth Engineering Division Corp. Ltd.
Guangdong Sheng, China
Patent: 5
China Railway Design Group Co., Ltd.
Tianjin Shi, China
Patent: 5
China National Petroleum Corp.
Beijing Shi, China
Patent: 4
Changjiang Geotechnical Engineering Corp.
Hubei Sheng, China
Patent: 4
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With the analysis among related 231 patents applied in the last 5 years. We discover 157 most active companies in this area. The fast-growing Dyno Nobel AS, Nanjing Normal University, China Railway Tunnel Bureau Group Co., Ltd. take 10.39% of patent filing during this period.
Nanjing Normal University
Jiangsu Sheng, China
Patent: 8
China Railway Tunnel Bureau Group Co., Ltd.
Guangdong Sheng, China
Patent: 7
China Railway Tunnel Co Ltd.
Henan Sheng, China
Patent: 6
Gannan University of Science and Technology
Jiangxi Sheng, China
Patent: 4
Beijing Shi, China
Patent: 4
China University of Geosciences Beijing
Hubei Sheng, China
Patent: 4
China Communications First Public Bureau Group Co., Ltd.
Beijing Shi, China
Patent: 3
China Construction Second Engineering Bureau Co., Ltd.
Beijing Shi, China
Patent: 3
East China University of Technology
Jiangxi Sheng, China
Patent: 3
With the analysis among related 231 patents in last 5 years, we discover 135 new entrants. Dyno Nobel AS, Nanjing Normal University, Gannan University of Science and Technology are the most active new entrants in this area.
Nanjing Normal University
Jiangsu Sheng, China
Patent: 8
Gannan University of Science and Technology
Jiangxi Sheng, China
Patent: 4
China University of Geosciences Beijing
Hubei Sheng, China
Patent: 4
China Communications First Public Bureau Group Co., Ltd.
Beijing Shi, China
Patent: 3
China Construction Second Engineering Bureau Co., Ltd.
Beijing Shi, China
Patent: 3
East China University of Technology
Jiangxi Sheng, China
Patent: 3
Powerchina Chengdu Engineering Corp. Ltd.
Sichuan Sheng, China
Patent: 3
CCCC First Public Office Haiwei Engineering Construction Co., Ltd.
Beijing Shi, China
Patent: 3
CCCC Guangzhou Dredging Co. Ltd.
Guangdong Sheng, China
Patent: 3
With the analysis among 140 patents, we discovered top 39 universities and scientific research institutions by total patent application. Nanjing Normal University, Southwest Petroleum University, China University of Geosciences Beijing are dominant in this area. They take 12.14% of the total patent filing.
Nanjing Normal University
Jiangsu Sheng, China
Patent: 8
Southwest Petroleum University
Sichuan Sheng, China
Patent: 5
China University of Geosciences Beijing
Hubei Sheng, China
Patent: 4
East China University of Technology
Jiangxi Sheng, China
Patent: 3
China University of Geosciences
Beijing Shi, China
Patent: 3
Guangdong Sheng, China
Patent: 2
Sichuan Sheng, China
Patent: 2
China University of Petroleum (East China)
Shandong Sheng, China
Patent: 2
Shaanxi Sheng, China
Patent: 2
Jiangsu Sheng, China
Patent: 2