With the analysis among 105 patents, we discovered top 22 key players by total patent application. RCA Corp., International Business Machines Corp., Koninklijke Philips NV are dominant in this area. They take 33.33% of the total patent filing.
California, United States
Patent: 13
International Business Machines Corp.
New York, United States
Patent: 11
Noord-Holland, Netherlands
Patent: 11
Philips Electrical Industries of Pakistan Ltd.
New York, United States
Patent: 4
IBM Deutschland Informationssysteme GmbH
Mine Safety Appliances Co. LLC
Pennsylvania, United States
Patent: 3
Global Tungsten & Powders Corp.
Pennsylvania, United States
Patent: 3
National Research Development Corp.
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