With the analysis among 132 patents, we discovered top 70 key players by total patent application. Lancaster Group, Fuji Photo Film Co., Ltd., Seiko Epson Corp. are dominant in this area. They take 16.67% of the total patent filing.
Gauteng, South Africa
Patent: 6
Nagano-ken, Japan
Patent: 4
Vaud, Switzerland
Patent: 4
Nordrhein-Westfalen, Germany
Patent: 3
Nordrhein-Westfalen, Germany
Patent: 3
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