With 55 Enhanced Oil Recovery (EOR) related patents published between 2002 and 2022, Shell plc holds the most number of Enhanced Oil Recovery (EOR) patents in Germany, of which 98.2% was contributed by its subsidiary Shell Internationale Research Maatschappij B.V..
The second largest number of Enhanced Oil Recovery (EOR) related patents were published by Siemens AG with 55 patents. The third largest number of Enhanced Oil Recovery (EOR) related patents were published by Linde plc with 23 patents, of which 82.6% was contributed by its subsidiary Linde Gmbh. The fourth largest number of Enhanced Oil Recovery (EOR) related patents were published by Denso Corp with 18 patents. The fifth largest number of Enhanced Oil Recovery (EOR) related patents were published by Halliburton Co with 18 patents, of which 55.6% was contributed by its subsidiary Halliburton Energy Services Inc.
The top five patent holders, i.e., Shell plc, Siemens AG, Linde plc, Denso Corp, and Halliburton Co, together held 169 Enhanced Oil Recovery (EOR) patents during the period.
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