With the analysis among 30 patents, we discovered top 20 key players by total patent application. The Black & Decker Corp., Hitachi Ltd., Mitsubishi Electric Corp. are dominant in this area. They take 23.33% of the total patent filing.
Liaoning Sheng, China
Patent: 1
Chungcheongnam-do, South Korea
Patent: 1
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With the analysis among related 2 patents applied in the last 5 years. We discover 2 most active companies in this area.
Hubei Sheng, China
Patent: 1
Shanghai Shi, China
Patent: 1
With the analysis among related 2 patents in last 5 years, we discover 2 new entrants.
Hubei Sheng, China
Patent: 1
Shanghai Shi, China
Patent: 1
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