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S. No.TitleInventorsCountryApp.No.Filing DatePatent No.Patent Seal Date
1 Process for the recovery of copper, iron, tin, and lead from used printed circuit boards using organic acids S Natarajan India1671/DEL/2015 05-Jun-2015 362487 22-Mar-2021
2 Process for the recovery of lithium from lithium-ion batteries using acetic acid S Natarajan India  12-Sep-2016 384778 21-Dec-2021
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