With 7,454 patents published between 2002 and 2022, Toyota Motor Corp holds the most number of patents in the Oil & Gas sector in Japan.
The second largest number of patents were published by Sumitomo Chemical Co Ltd with 6,646 related patents. The third largest number of patents were published by Fujifilm Holdings Corp with 6,501 related patents, of which 77.8% was contributed by its subsidiary Fujifilm Corp. The fourth largest number of patents were published by Nitto Denko Corp with 6,002 related patents. The fifth largest number of patents were published by Mitsubishi Chemical Holdings Corp with 5,893 related patents, of which 51.3% was contributed by its subsidiary Mitsubishi Chemical Corp.
The top five patent holders, i.e., Toyota Motor Corp, Sumitomo Chemical Co Ltd, Fujifilm Holdings Corp, Nitto Denko Corp, and Mitsubishi Chemical Holdings Corp, together held 32,496 patents during the period.
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