MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202621009852 A) filed by Dr. Somya Omprakash Singh; and Abhishek Omprakash Singh, Nashik, Maharashtra, on Jan. 30, for 'development of ppa (pawan putra avaran): a herbal and activated carbon composite mask with replaceable filters for mitigating chronic low-level air pollutants, reducing formaldehyde exposure, and mucosal toxicity.'

Inventor(s) include Dr. Somya Omprakash Singh; and Abhishek Omprakash Singh.

The application for the patent was published on March 13, under issue no. 11/2026.

According to the abstract released by the Intellectual Property India: "The invention pertains to a low-cost, breathable, and eco-sustainable mask designed to pr...