With the analysis among 174 patents, we discovered top 99 key players by total patent application. AT&T, Inc., MCI, Inc., GTE Automatic Electric are dominant in this area. They take 17.82% of the total patent filing.
Texas, United States
Patent: 11
Iowa, United States
Patent: 11
Wisconsin, United States
Patent: 9
Wisconsin, United States
Patent: 5
Western Electric Co., Inc.
Georgia, United States
Patent: 4
Jiangsu Sheng, China
Patent: 4
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With the analysis among related 9 patents applied in the last 5 years. We discover 9 most active companies in this area. The fast-growing Northwestern Polytechnical University, Nanjing Nari Jibao Electric Co. Ltd., China Railway Liuyuan Group Co., Ltd. take 44.44% of patent filing during this period.
Northwestern Polytechnical University
Shaanxi Sheng, China
Patent: 2
Nanjing Nari Jibao Electric Co. Ltd.
Jiangsu Sheng, China
Patent: 1
China Railway Liuyuan Group Co., Ltd.
Tianjin Shi, China
Patent: 1
Shenzhen Vichuangyuan Technology Co., Ltd.
Guangdong Sheng, China
Patent: 1
Guizhou Electric Power Design & Research Institute
Guizhou Sheng, China
Patent: 1
Jiangsu Sheng, China
Patent: 1
China Academy of Launch Vehicle Technology
Beijing Shi, China
Patent: 1
Beijing Institute of Aerospace Systems Engineering
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Patent: 1
With the analysis among related 9 patents in last 5 years, we discover 9 new entrants. Northwestern Polytechnical University, Nanjing Nari Jibao Electric Co. Ltd., China Railway Liuyuan Group Co., Ltd. are the most active new entrants in this area.
Northwestern Polytechnical University
Shaanxi Sheng, China
Patent: 2
Nanjing Nari Jibao Electric Co. Ltd.
Jiangsu Sheng, China
Patent: 1
China Railway Liuyuan Group Co., Ltd.
Tianjin Shi, China
Patent: 1
Shenzhen Vichuangyuan Technology Co., Ltd.
Guangdong Sheng, China
Patent: 1
Guizhou Electric Power Design & Research Institute
Guizhou Sheng, China
Patent: 1
Jiangsu Sheng, China
Patent: 1
China Academy of Launch Vehicle Technology
Beijing Shi, China
Patent: 1
Beijing Institute of Aerospace Systems Engineering
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Patent: 1
With the analysis among 15 patents, we discovered top 6 universities and scientific research institutions by total patent application. Tsinghua University, Northwestern Polytechnical University, Beijing Institute of Technology are dominant in this area. They take 33.33% of the total patent filing.
Beijing Shi, China
Patent: 2
Northwestern Polytechnical University
Shaanxi Sheng, China
Patent: 2
Beijing Institute of Technology
Beijing Shi, China
Patent: 1
Beijing Shi, China
Patent: 1
North China Electric Power University
Beijing Shi, China
Patent: 1
Railway Technical Research Institute