With 2,367 Hydrogen related patents published between 2002 and 2022, Air Liquide SA holds the most number of Hydrogen patents in the global Oil & Gas sector.
The second largest number of Hydrogen related patents were published by Linde plc with 2,124 patents, of which 47.8% was contributed by its subsidiary Linde Gmbh. The third largest number of Hydrogen related patents were published by Toyota Motor Corp with 1,817 patents. The fourth largest number of Hydrogen related patents were published by Air Products and Chemicals Inc with 1,396 patents. The fifth largest number of Hydrogen related patents were published by Shell plc with 1,131 patents, of which 73.2% was contributed by its subsidiary Shell Internationale Research Maatschappij B.V..
The top five patent holders, i.e., Air Liquide SA, Linde plc, Toyota Motor Corp, Air Products and Chemicals Inc, and Shell plc, together held 8,835 Hydrogen patents during the period.
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