MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202611110326 A) filed by Chandigarh University on September 14, 2026, for Passive Water Quality Detection Bottle Cap With Color Changing Indicator Cartridge.

Inventors include Sushant Katoch; Praveen Ailawalia; Ayush Katoch; Shubham Thakur; Pranadeep Devasani; and Himanshul Sharma.

The application for the patent was published on October 30, 2026, under issue no. 44/2026.

Abstract: A passive water-quality detection bottle cap includes a bottle cap housing (101), a semi- permeable membrane (105), a removable indicator cartridge (103) carrying a chemical indicator strip (104), and a transparent viewing window (102). Dissolved constituents in water perme...