With the analysis among 434 patents, we discovered top 56 key players by total patent application. Siemens AG, STC Plc, International Standard Electric Corp. are dominant in this area. They take 42.63% of the total patent filing.
Bayern, Germany
Patent: 84
International Standard Electric Corp.
New York, United States
Patent: 35
Westinghouse Brake & Signal Co. Ltd.
Licentia Patent Verwaltungs GmbH
Nordrhein-Westfalen, Germany
Patent: 24
Standard Telephone & Radio SA
Standard Elektrik Lorenz AG
Nordrhein-Westfalen, Germany
Patent: 13
Westinghouse Electric Co. LLC
Gansu Sheng, China
Patent: 10
Noord-Holland, Netherlands
Patent: 6
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With the analysis among related 3 patents applied in the last 5 years. We discover 2 most active companies in this area.
Shanghai Hongyan Electric Co., Ltd.
Shanghai Shi, China
Patent: 1
Hebi Vida Kexun Electric Co., Ltd.
Henan Sheng, China
Patent: 1
With the analysis among related 3 patents in last 5 years, we discover 2 new entrants.
Shanghai Hongyan Electric Co., Ltd.
Shanghai Shi, China
Patent: 1
Hebi Vida Kexun Electric Co., Ltd.
Henan Sheng, China
Patent: 1
With the analysis among 5 patents, we discovered top 1 universities and scientific research institutions by total patent application.
Beijing Shi, China
Patent: 1