With 756 Circular Economy related patents published between 2002 and 2022, Halliburton Co holds the most number of Circular Economy patents in the global Chemicals sector, of which 94.3% was contributed by its subsidiary Halliburton Energy Services Inc.
The second largest number of Circular Economy related patents were published by BASF SE with 477 patents. The third largest number of Circular Economy related patents were published by Schlumberger Ltd with 358 patents, of which 35.2% was contributed by its subsidiary Schlumberger Technology BV. The fourth largest number of Circular Economy related patents were published by Saudi Arabian Oil Co with 325 patents, of which 32.9% was contributed by its subsidiary Sabic Global Technologies B.V.. The fifth largest number of Circular Economy related patents were published by Solvay SA with 309 patents, of which 35.6% was contributed by its subsidiary Rhodia Operations SASU.
The top five patent holders, i.e., Halliburton Co, BASF SE, Schlumberger Ltd, Saudi Arabian Oil Co, and Solvay SA, together held 2,225 Circular Economy patents during the period.
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