With the analysis among 55 patents, we discovered top 19 key players by total patent application. International Business Machines Corp., Hitachi Ltd., CADIS GmbH are dominant in this area. They take 60.00% of the total patent filing.
New York, United States
Patent: 23
Nordrhein-Westfalen, Germany
Patent: 4
Arizona, United States
Patent: 4
California, United States
Patent: 2
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