With the analysis among 120 patents, we discovered top 41 key players by total patent application. LINDA AG, L'Air Liquide SA, Shell Internationale Research Maatschappij BV are dominant in this area. They take 39.17% of the total patent filing.
Nordrhein-Westfalen, Germany
Patent: 33
Zuid-Holland, Netherlands
Patent: 6
California, United States
Patent: 4
New York, United States
Patent: 3
ZURICH, Switzerland
Patent: 2
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