With the analysis among 57 patents, we discovered top 26 key players by total patent application. IG Farbenindustrie AG, GAF Corp., Kodak Ltd. are dominant in this area. They take 42.11% of the total patent filing.
Hessen, Germany
Patent: 11
New Jersey, United States
Patent: 7
Hertfordshire, United Kingdom
Patent: 6
CHESHIRE, United Kingdom
Patent: 3
New York, United States
Patent: 2
Nordrhein-Westfalen, Germany
Patent: 1
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