MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202511121388 A) filed by Indian Institute Of Technology, Roorkee, Uttarakhand, on Dec. 3, 2025, for 'a recycled copper-based conductive ink for rotogravure, screen and flexographic printing applications.'
Inventor(s) include Prof. Vibhore Kumar Rastogi; Mr. Brahma Prakash; and Dr. Anurag Kulshreshtha.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a recycled copper-based conductive ink prepared by utilizing industrial copper waste, an acrylic emulsion binder synthesized via emulsion polymerization, and conductive polypyrrole filler obtained through oxidative polymerization. The copper powder recovered from rotogravure cylinder engraving units is sieved and incorporated at 35 wt % into the formulation, producing a stable, water-based conductive ink with superior adhesion and electrical properties. The developed ink demonstrates conductivity up to 1340 S/m, drying within 15-20 seconds, and long-term stability up to 120-180 days. It is suitable for rotogravure, screen and flexographic printing, providing an eco-friendly route for industrial copper waste utilization in flexible electronics and packaging inks."
Disclaimer: Curated by HT Syndication.
