With 258 patents held between 2002 and 2022, Hitachi Ltd holds the most number of Industrial Automation patents in the Transportation, Infrastructure and Logistics sector in the Asia-Pacific region.
The second largest number of patents were held by China Railway Signal & Communication Corp Ltd with 120 Industrial Automation patents, of which 63.3% was contributed by CASCO SIGNAL Ltd. The third largest number of patents were held by Siemens AG with 103 Industrial Automation patents. The fourth largest number of patents were held by Samsung Heavy Industries Co Ltd with 99 Industrial Automation patents. The fifth largest number of patents were held by The Nippon Signal Co Ltd with 96 Industrial Automation patents.
The top five patents holders, i.e., Hitachi Ltd, China Railway Signal & Communication Corp Ltd, Siemens AG, Samsung Heavy Industries Co Ltd, and The Nippon Signal Co Ltd, together held 676 Industrial Automation patents during the period.
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