With 8,690 patents published between 2002 and 2022, Fujifilm Holdings Corp holds the most number of patents in the Chemicals sector in Japan, of which 76.0% was contributed by its subsidiary Fujifilm Corp.
The second largest number of patents were published by Sumitomo Chemical Co Ltd with 7,642 related patents. The third largest number of patents were published by Nitto Denko Corp with 5,806 related patents. The fourth largest number of patents were published by Mitsubishi Chemical Holdings Corp with 5,511 related patents, of which 50.9% was contributed by its subsidiary Mitsubishi Chemical Corp. The fifth largest number of patents were published by Sumitomo Electric Industries Ltd with 4,316 related patents, of which 64.2% was contributed by its subsidiary Sumitomo Rubber Industries Ltd.
The top five patent holders, i.e., Fujifilm Holdings Corp, Sumitomo Chemical Co Ltd, Nitto Denko Corp, Mitsubishi Chemical Holdings Corp, and Sumitomo Electric Industries Ltd, together held 31,965 patents during the period.
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