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Oil and gas companies filing the most patents in Q1 2021 (source: GlobalData)

Assignee Filings
LG Chem Ltd 2180
SASAC 1434
Dow Inc 633
BASF SE 610
China National Petroleum Corp 594
Mitsubishi Group 590
Saudi Arabian Oil Co 475
Sumitomo Chemical Co Ltd 483
Halliburton Co 457
Toray Industries Inc 456

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