MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202511117476 A) filed by Malaviya National Institute Of Technology, Jaipur, Rajasthan, on Nov. 26, 2025, for 'calcium carbonate nanoparticles enhanced sandstone slurry for stabilization of clayey subgrade.'

Inventor(s) include Amrit Singh Shekhawat; and Prof. Suresh Kumar Tiwari.

The application for the patent was published on Jan. 9, under issue no. 02/2026.

According to the abstract released by the Intellectual Property India: "The present invention relates to a sustainable soil stabilization system for improving the engineering performance of clayey subgrade soils using a novel combination of sandstone slurry waste (SSW) and calcium carbonate nano...