With 1,487 patents held between 2002 and 2022, Halliburton Co holds the most number of Enhanced Oil Recovery (EOR) patents in the Oil & Gas sector in the North America region, of which 82.6% was contributed by Halliburton Energy Services Inc.
The second largest number of patents were held by Shell plc with 957 Enhanced Oil Recovery (EOR) patents, of which 68.9% was contributed by Shell Oil Co. The third largest number of patents were held by Schlumberger Ltd with 615 Enhanced Oil Recovery (EOR) patents, of which 56.6% was contributed by Schlumberger Technology Corp. The fourth largest number of patents were held by Baker Hughes Co with 512 Enhanced Oil Recovery (EOR) patents. The fifth largest number of patents were held by Saudi Arabian Oil Co with 452 Enhanced Oil Recovery (EOR) patents.
The top five patents holders, i.e., Halliburton Co, Shell plc, Schlumberger Ltd, Baker Hughes Co, and Saudi Arabian Oil Co, together held 4,023 Enhanced Oil Recovery (EOR) patents during the period.
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