MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202611112345 A) filed by Baljeet Yadav; and Poonam Yadav on September 18, 2026, for Paper-Based Analytical Device And Method For Presumptive Forensic Detection Of Plant-Derived And Synthetic Poisonous Substances.
Inventors include Baljeet Yadav; Poonam Yadav; Tanushri Johari; Jannath S Sabu; Ashish Ranjan; Anita Yadav; Anjali Verma; Nirwan Ingole; Sanjay Parihar; and Neelanjana Namdev.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: A paper-based analytical device (100) for presumptive detection of a target substance in a sample includes a paper substrate (102) having a sample receiving zone (104), a reaction zone (106) having a detection reagent (108) retained on or within the paper substrate (102), and a control zone (110) positioned in association with the reaction zone (106). The sample receiving zone (104) is positioned with a sample-preparation component (112) including an extraction component (114), a dilution component (116), a filtration component (118), a sample container (120), or a transfer component. The reaction zone (106) provides a visually distinguishable response upon contact with the target substance. The reaction zone (106) may include spatially separated detection regions arranged as a labelled array and having different detection reagents (108) for different target substances or classes of target substances. The control zone (110) may include positive and negative control regions.
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