With 30 Hydrogen related patents published between 2002 and 2022, Shell plc holds the most number of Hydrogen patents in Azerbaijan.
The second largest number of Hydrogen related patents were published by Haldor Topsoe Holding A/S with 26 patents. The third largest number of Hydrogen related patents were published by Air Liquide SA with 22 patents. The fourth largest number of Hydrogen related patents were published by Japan Oil, Gas and Metals National Corp with 20 patents. The fifth largest number of Hydrogen related patents were published by Nippon Steel Corp with 20 patents.
The top five patent holders, i.e., Shell plc, Haldor Topsoe Holding A/S, Air Liquide SA, Japan Oil, Gas and Metals National Corp, and Nippon Steel Corp, together held 118 Hydrogen patents during the period.
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