With 263 patents published between 2002 and 2022, Pfizer Inc holds the most number of patents in the Oil & Gas sector in Central African Republic, of which 41.8% was contributed by its subsidiary Pfizer Products Inc..
The second largest number of patents were published by Shell plc with 70 related patents, of which 97.1% was contributed by its subsidiary Shell Internationale Research Maatschappij B.V.. The third largest number of patents were published by GSK plc with 50 related patents. The fourth largest number of patents were published by Sanofi with 39 related patents, of which 33.3% was contributed by its subsidiary Aventis Pharma SA. The fifth largest number of patents were published by Exxon Mobil Corp with 19 related patents, of which 47.4% was contributed by its subsidiary ExxonMobil Upstream Research Co.
The top five patent holders, i.e., Pfizer Inc, Shell plc, GSK plc, Sanofi, and Exxon Mobil Corp, together held 441 patents during the period.
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