With 432 patents published between 2002 and 2022, Komatsu Ltd holds the most number of patents in the Mining sector in United States, of which 71.5% was contributed by its subsidiary Joy Global Underground Mining, LLC.
The second largest number of patents were published by Sandvik AB with 360 related patents. The third largest number of patents were published by Caterpillar Inc with 324 related patents, of which 57.4% was contributed by its subsidiary Caterpillar Global Mining Europe GmbH. The fourth largest number of patents were published by Kennametal Inc with 320 related patents. The fifth largest number of patents were published by Sumitomo Electric Industries Ltd with 196 related patents, of which 70.9% was contributed by its subsidiary SUMITOMO ELECTRIC HARDMETAL CORP..
The top five patent holders, i.e., Komatsu Ltd, Sandvik AB, Caterpillar Inc, Kennametal Inc, and Sumitomo Electric Industries Ltd, together held 1,632 patents during the period.
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