MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202621094568 A) filed by Vishwakarma Institute Of Technology on August 04, 2026, for A Universal External Retrofit Pre-Filtration Device For An Air Purifier.
Inventors include Kanjalkar, Pramod; Kanjalkar, Jyoti Pramod; Kulkarni, Radhika; Dhage, Tushar Vikas; Deshmukh, Shivrani Nilesh; Bombale, Dhanay Nitin; and Agrawal, Nikhil Manish.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: The present invention relates to a universal external retrofit pre-filtration device for an air purifier comprising a frame (24) and a replaceable dust collection sheet (26). The frame (24) is removably mounted on t...