MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202641113452 A) filed by Minimines Cleantech Solutions Private Limited on September 22, 2026, for A Continuous Two-Column Vacuum Distillation System And Method For Refining Spent N-Methyl-2- Pyrrolidone.
Inventors include Anupam Kumar; and Arvind Bhardwaj.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: A CONTINUOUS TWO-COLUMN VACUUM DISTILLATION SYSTEM AND METHOD FOR REFINING SPENT N-METHYL-2-PYRROLIDONE The invention relates to solvent recovery and purification from lithium-ion battery manufacturing and recycling streams, and more particularly to continuous refining of spent N-methyl-2-pyrrol...