With the analysis among 27 patents, we discovered top 19 key players by total patent application. SANYO Electric Co., Ltd., Matsushita Electronics Corp., Hitachi Ltd. are dominant in this area. They take 29.63% of the total patent filing.
California, United States
Patent: 3
Guangdong Sheng, China
Patent: 2
Hiroshima-ken, Japan
Patent: 2
Noord-Holland, Netherlands
Patent: 1
Brussels Hoofdstedelijk Gewest, Belgium
Patent: 1
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