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
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.
Shaanxi Sheng, China
Patent: 2
Jiangsu Sheng, China
Patent: 1
Tianjin Shi, China
Patent: 1
Guangdong Sheng, China
Patent: 1
Guizhou Sheng, China
Patent: 1
Jiangsu Sheng, China
Patent: 1
Beijing Shi, China
Patent: 1
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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.
Shaanxi Sheng, China
Patent: 2
Jiangsu Sheng, China
Patent: 1
Tianjin Shi, China
Patent: 1
Guangdong Sheng, China
Patent: 1
Guizhou Sheng, China
Patent: 1
Jiangsu Sheng, China
Patent: 1
Beijing Shi, China
Patent: 1
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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
Shaanxi Sheng, China
Patent: 2
Beijing Shi, China
Patent: 1
Beijing Shi, China
Patent: 1
Beijing Shi, China
Patent: 1